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2024article/chapter in journal
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Zöllner, Marcel; Mannel, Hendrik; Rimek, Fabio; Maib, Britta; Schwarz, N.; Wieck, A.D.; Ludwig, A.; Lorke, Axel; Geller, Martin Paul:
The interplay between electron tunneling and Auger emission in a single quantum emitter weakly coupled to an electron reservoir
In: Applied Physics Letters (APL), Vol. 124 (2024), No. 2, Article 023102
2023article/chapter in journal
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Kerski, J.; Mannel, H.; Lochner, P.; Kleinherbers, E.; Kurzmann, A.; Ludwig, A.; Wieck, A.D.; König, J.; Lorke, A.; Geller, M.:
Post-processing of real-time quantum event measurements for an optimal bandwidth
In: Scientific Reports, Vol. 13 (2023), No. 1, Article 1105
2023article/chapter in journal
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Yamamoto, Yohei; Yamagishi, Hiroshi; Huang, Jer-Shing; Lorke, Axel:
Molecular and Supramolecular Designs of Organic/Polymeric Micro-photoemitters for Advanced Optical and Laser Applications
In: Accounts of Chemical Research, Vol. 56 (2023), No. 12, pp. 1469 - 1481
2023dissertation
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Dergianlis, Vasileios:
Nano-patterning and characterization of functional materials
Duisburg, Essen, 2023
2023article/chapter in journal
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Mannel, Hendrik; Kerski, Jens; Lochner (vorm. Eickelmann), Pia; Zöllner, Marcel; Wieck, A.D.; Ludwig, A.; Lorke, Axel; Geller, Martin Paul:
Auger and spin dynamics in a self-assembled quantum dot
In: Journal of Applied Physics, Vol. 134 (2023), No. 15, Article 154304
2023article/chapter in journal
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Heckschen, Markus; Beyazit, Yasin; Shomali, Elaheh; Kühne, Florian; Jayabalan, Jesumony; Zhou, Ping; Diesing, Detlef; Gruner, Markus; Pentcheva, Rossitza; Lorke, Axel; Sothmann, Björn; Bovensiepen, Uwe:
Spatio-Temporal Electron Propagation Dynamics in Au/Fe/MgO(001) in Nonequilibrium: Revealing Single Scattering Events and the Ballistic Limit
In: PRX Energy, Vol. 2 (2023), No. 4, Article 043009
2023article/chapter in journal
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Schaumburg, Felix; Sleziona, Stephan; Zöllner, Marcel; Dergianlis, Vasilis; Schleberger, Marika; Geller, Martin Paul; Lorke, Axel; Prinz, Günther:
Enhanced intensity of Raman signals from hexagonal boron nitride films
In: Applied Physics Letters (APL), Vol. 123 (2023), No. 7, Article 073101
2023dissertation
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Kerski, Jens:
Nichtgleichgewichtsdynamik in selbstorganisierten Quantenpunkten
Duisburg, Essen, 2023
2023article/chapter in journal
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Kleinherbers, Eric; Mannel, Hendrik; Kerski, Jens; Geller, Martin Paul; Lorke, Axel; König, Jürgen:
Unraveling spin dynamics from charge fluctuations
In: Physical Review Research, Vol. 5 (2023), No. 4, Article 043103
2022dissertation
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Oing, Dennis:
Einsatz vom Diamant in der Halbleitertechnik
Duisburg, Essen, 2022
2022article/chapter in journal
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Kleinherbers, Eric; Stegmann, Philipp; Kurzmann, Annika; Geller, Martin Paul; Lorke, Axel; König, Jürgen:
Pushing the Limits in Real-Time Measurements of Quantum Dynamics
In: Physical Review Letters, Vol. 128 (2022), No. 8, Article 087701
2022article/chapter in journal
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Zhou, Daming; Kerski, Jens; Beckel, Andreas; Geller, Martin Paul; Lorke, Axel; Ludwig, Arne; Wieck, Andreas D.; Chen, Xiaoshuang; Lu, Wei:
The role of momentum conservation on the tunneling between a two-dimensional electron gas and self-assembled quantum dots
In: Journal of Applied Physics, Vol. 132 (2022), No. 6, Article 064401
2022article/chapter in journal
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Ahmadiniaz, Naser; Geller, Martin Paul; König, Jürgen; Kratzer, Peter; Lorke, Axel; Schaller, Gernot; Schützhold, R.:
Quantum Zeno manipulation of quantum dots
In: Physical Review Research, Vol. 4 (2022), No. 3, Article L032045
2021article/chapter in journal
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Lorke, Axel:
Boiling eggs, radiation damage, and the Arrhenius plot
In: Physics Today, Vol. 74 (2021), No. 5, pp. 66 - 67
2021article/chapter in journal
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Sifft, Markus; Kurzmann, Annika; Kerski, Jens; Schott, Rüdiger; Ludwig, Arne; Wieck, Andreas Dirk; Lorke, Axel; Geller, Martin Paul; Hägele, Daniel:
Quantum polyspectra for modeling and evaluating quantum transport measurements : A unifying approach to the strong and weak measurement regime
In: Physical Review Research, Vol. 3 (2021), No. 3, Article 033123
2021article/chapter in journal
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Asaithambi, Aswin Vijai; Kozubek, Roland; Prinz, Günther; Reale, Francesco; Pollmann, Erik; Ney, Marcel; Mattevi, Cecilia; Schleberger, Marika; Lorke, Axel:
Laser- and Ion-Induced Defect Engineering in WS₂ Monolayers
In: Physica Status Solidi (RRL) : Rapid Research Letters, Vol. 15 (2021), No. 1, p. 2000466
2021article/chapter in journal
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Kerski, Jens; Lochner, Pia; Ludwig, A.; Wieck, A.D.; Kurzmann, Annika; Lorke, Axel; Geller, Martin Paul:
Quantum Sensor for Nanoscale Defect Characterization
In: Physical Review Applied, Vol. 15 (2021), No. 2, p. 024029
2021dissertation
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Tigges, Sebastian:
Synthese und Charakterisierung von Kohlenstoffnanowänden und deren Anwendung in der Elektrokatalyse
Duisburg, Essen, 2021
2021article/chapter in journal
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Lochner, Pia; Kerski, Jens; Kurzmann, Annika; Wieck, Andreas Dirk; Ludwig, Arne; Geller, Martin Paul; Lorke, Axel:
Internal photoeffect from a single quantum emitter
In: Physical Review B, Vol. 103 (2021), No. 7, p. 075426
2021article/chapter in journal
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Sleziona, Stephan; Rauls, Simon; Heckhoff, Tobias; Christen, Leonard; Pollmann, Erik; Madauß, Lukas; Franzka, Steffen; Lorke, Axel; Wende, Heiko; Schleberger, Marika:
Towards field-effect controlled graphene-enhanced Raman spectroscopy of cobalt octaethylporphyrin molecules
In: Nanotechnology, Vol. 32 (2021), No. 20, p. 205702
2021article/chapter in journal
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Oing, Dennis; Ney, Marcel; Bendt, Georg; Schulz, Stephan; Geller, Martin Paul; Wöhrl, Nicolas; Lorke, Axel:
A monolithic, back-gated diamond field-effect transistor for tunable color centers
In: Diamond and Related Materials, Vol. 119 (2021), Article 108597
2021article/chapter in journal
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Wu, Jiongyao; Zöllner, Marcel; Esser, Sebastian; Begum, Vijaya; Prinz, Günther; Lorke, Axel; Gegenwart, Philipp; Pentcheva, Rossitza:
Electronic reconstruction and charge transfer in strained Sr2CoIrO6 double perovskite
In: Physical Review B, Vol. 104 (2021), No. 20, Article 205126
2020article/chapter in journal
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Oing, Dennis; Geller, Martin Paul; Stahl, Lucas; Kerski, Jens; Lorke, Axel; Wöhrl, Nicolas:
Defect spectroscopy on the dielectric material aluminum oxide
In: Scientific Reports, Vol. 10 (2020), No. 1, Article 12533
2020article/chapter in journal
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Kaupmees, Reelika; Grossberg, Maarja; Ney, Marcel; Asaithambi, Aswin Vijai; Lorke, Axel; Krustok, Jüri:
Tailoring of Bound Exciton Photoluminescence Emission in WS₂ Monolayers
In: Physica Status Solidi (RRL) : Rapid Research Letters, Vol. 14 (2020), No. 2: Special Issue: Two‐Dimensional Semiconductors, p. 1900355
2020dissertation
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Asaithambi, Aswin Vijai:
Optical spectroscopy of micro- and nanostructured semiconductors
Duisburg, Essen, 2020
2020article/chapter in journal
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Lochner, Pia; Kurzmann, Annika; Kerski, Jens; Stegmann, Philipp; König, Jürgen; Wieck, Andreas D.; Ludwig, Arne; Lorke, Axel; Geller, Martin Paul:
Real-Time Detection of Single Auger Recombination Events in a Self-Assembled Quantum Dot
In: Nano Letters, Vol. 20 (2020), No. 3
2020article/chapter in journal
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Iwai, Kohei; Yamagishi, Hiroshi; Herzberger, Colin; Sato, Yuji; Tsuji, Hayato; Albrecht, Ken; Yamamoto, Kimihisa; Sasaki, Fumio; Sato, Hiroyasu; Asaithambi, Aswin Vijai; Lorke, Axel; Yamamoto, Yohei:
Single-Crystalline Optical Microcavities from Luminescent Dendrimers
In: Angewandte Chemie International Edition, Vol. 59 (2020), No. 31, pp. 12674 - 12679
2020article/chapter in journal
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Tigges, Sebastian; Wöhrl, Nicolas; Radev, Ivan; Hagemann, Ulrich; Heidelmann, Markus; Nguyen, Thai Binh; Gorelkov, Stanislav; Schulz, Stephan; Lorke, Axel:
One-step synthesis of carbon-supported electrocatalysts
In: Beilstein Journal of Nanotechnology, Vol. 11 (2020), pp. 1419 - 1431
2020article/chapter in journal
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Tigges, Sebastian; Wöhrl, Nicolas; Hagemann, Ulrich; Ney, Marcel; Lorke, Axel:
The effect of metal-oxide incorporation on the morphology of carbon nanostructures
In: Journal of Physics D : Applied Physics, Vol. 53 (2020), No. 14, p. 145206
2019article/chapter in journal
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Asaithambi, Aswin Vijai; Okada, Daichi; Prinz, Günther; Sato, Hiroyasu; Saeki, Akinori; Nakamura, Takashi; Nabeshima, Tatsuya; Yamamoto, Yohei; Lorke, Axel:
Polychromatic Photoluminescence of Polymorph Boron Dipyrromethene Crystals and Heterostructures
In: Journal of Physical Chemistry C : Nanomaterials and Interfaces, Vol. 123 (2019), No. 8, pp. 5061 - 5066
2019article/chapter in journal
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Al-Ashouri, Amran; Kurzmann, Annika; Merkel, Benjamin; Ludwig, Arne; Wieck, Andreas D.; Lorke, Axel; Geller, Martin Paul:
Photon Noise Suppression by a Built-in Feedback Loop
In: Nano Letters, Vol. 19 (2019), No. 1, pp. 135 - 141
2019article/chapter in journal
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Dergianlis, Vasilis; Geller, Martin Paul; Oing, Dennis; Wöhrl, Nicolas; Lorke, Axel:
Patterning of diamond with 10 nm resolution by electron-beam-induced etching
In: Nanotechnology, Vol. 30 (2019), No. 36, p. 365302
2019article/chapter in journal
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Kurzmann, Annika; Stegmann, Philipp; Kerski, Jens; Schott, Rüdiger; Ludwig, Arne; Wieck, Andreas Dirk; König, Jürgen; Lorke, Axel; Geller, Martin Paul:
Optical Detection of Single-Electron Tunneling into a Semiconductor Quantum Dot
In: Physical Review Letters, Vol. 122 (2019), No. 24, p. 247403
2019article/chapter in journal
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Lochner, Pia; Kurzmann, Annika; Schott, Rüdiger; Wieck, Andreas D.; Ludwig, Arne; Lorke, Axel; Geller, Martin Paul:
Author Correction : Contrast of 83% in reflection measurements on a single quantum dot
In: Scientific Reports, Vol. 9 (2019), No. 1, p. 17811
2019article/chapter in journal
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Oing, Dennis; Geller, Martin Paul; Lorke, Axel; Wöhrl, Nicolas:
Tunable carrier density and high mobility of two-dimensional hole gases on diamond : The role of oxygen adsorption and surface roughness
In: Diamond and Related Materials, Vol. 97 (2019), p. 107450
2019article/chapter in journal
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Lochner, Pia; Kurzmann, Annika; Schott, Rüdiger; Wieck, Andreas D.; Ludwig, Arne; Lorke, Axel; Geller, Martin Paul:
Contrast of 83% in reflection measurements on a single quantum dot
In: Scientific Reports, Vol. 9 (2019), p. 8817
2018article/chapter in journal
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Miranda, Alessio; Lorke, Axel:
Stability of suspended monolayer graphene membranes in alkaline environment
In: Materials Research Letters, Vol. 6 (2018), No. 1, pp. 49 - 54
2018article/chapter in journal
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Bendt, Georg; Kaiser, Kevin; Heckel, Alla; Rieger, Felix; Oing, Dennis; Lorke, Axel; Rodriguez, Nicolas Perez; Schierning, Gabi; Jooss, Christian; Schulz, Stephan:
Structural and thermoelectrical characterization of epitaxial Sb2Te3 high quality thin films grown by thermal evaporation
In: Semiconductor Science and Technology, Vol. 33 (2018), No. 10, Article 105002
2018article/chapter in journal
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Linder, Malte F.; Lorke, Axel; Schützhold, Ralf:
Analog Sauter-Schwinger effect in semiconductors for spacetime-dependent fields
In: Physical Review B, Vol. 97 (2018), p. 035203
2017article/chapter in journal
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Miranda, A.; Halim, J.; Lorke, Axel; Barsoum, M.W.:
Rendering Ti3C2Tx (MXene) monolayers visible
In: Materials Research Letters, Vol. 5 (2017), No. 5, pp. 322 - 328
2017article/chapter in journal
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Duyckaerts, Nicolas; Bartsch, Mathias; Trotuş, Ioan-Teodor; Pfänder, Norbert; Lorke, Axel; Schüth, Ferdi; Prieto, Gonzalo:
Intermediate Product Regulation in Tandem Solid Catalysts with Multimodal Porosity for High-Yield Synthetic Fuel Production
In: Angewandte Chemie International Edition, Vol. 56 (2017), No. 38, pp. 11480 - 11484
2017dissertation
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Kurzmann, Annika:
Zeitaufgelöste optische Transportspektroskopie an einzelnen selbstorganisierten Quantenpunkten
Duisburg, Essen, 2017
2017article/chapter in journal
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Kurzmann, Annika; Merkel, Benjamin; Marquardt, Bastian; Beckel, Andreas; Ludwig, Arne; Wieck, Andreas D.; Lorke, Axel; Geller, Martin Paul:
Electron dynamics in transport and optical measurements of self-assembled quantum dots
In: Physica Status Solidi (B) : Basic Solid State Physics, Vol. 254 (2017), No. 3, Special Issue: Single-Electron Control in Solid State Devices, p. 1600625
2017article/chapter in journal
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Sonntag, Jens; Kurzmann, Annika; Geller, Martin Paul; Queisser, Friedemann; Lorke, Axel; Schützhold, Ralf:
Giant magneto-photoelectric effect in suspended graphene
In: New Journal of Physics (NJP), Vol. 19 (2017), No. 6, p. 063028
2017article/chapter in journal
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Eltrudis, Kevin; Al-Ashouri, Amran; Beckel, Andreas; Ludwig, Arne; Wieck, Andreas Dirk; Geller, Martin Paul; Lorke, Axel:
All-electrical measurement of the triplet-singlet spin relaxation time in self-assembled quantum dots
In: Applied Physics Letters (APL), Vol. 111 (2017), No. 9, 092103_1 - 092103_4
2017article/chapter in journal
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Merkel, Benjamin; Kurzmann, Annika; Schulze, Jan Hindrik; Strittmatter, André; Geller, Martin Paul; Lorke, Axel:
Charge-driven feedback loop in the resonance fluorescence of a single quantum dot
In: Physical Review B, Vol. 95 (2017), No. 11, p. 115305
2017abstract in Proceedings
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Müller, Joachim; Fischer, Hans Ernst; Borowski, Andreas; Lorke, Axel:
Physikalisch-mathematische Modellierung und Studienerfolg
In: Implementation fachdidaktischer Innovation im Spiegel von Forschung und Praxis : Gesellschaft für Didaktik der Chemie und Physik ; Jahrestagung in Zürich 2016 / Maurer, Christian (Eds.). - 43. Jahrestagung der Gesellschaft für Didaktik der Chemie und Physik (GDCP) ; 05. bis 08. September 2016, Zürich - Regensburg: Universität Regensburg, 2017 - (Gesellschaft für Didaktik der Chemie und Physik ; 37), pp. 75 - 78
2016article/chapter in journal
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Kurzmann, Annika; Wieck, A.D.; Ludwig, A.; Lorke, Axel; Geller, Martin Paul:
Photoelectron generation and capture in the resonance fluorescence of a quantum dot
In: Applied Physics Letters (APL), Vol. 108 (2016), No. 26, p. 263108
2016article/chapter in journal
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Kurzmann, Annika; Geller, Martin Paul; Lorke, Axel; Wieck, Andreas D.; Ludwig, Arne:
Auger Recombination in Self-Assembled Quantum Dots : Quenching and Broadening of the Charged Exciton Transition
In: Nano Letters, Vol. 16 (2016), No. 5, pp. 3367 - 3372
2016article/chapter in journal
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Prinz, Günther; Müller, Martina; Gerber, Timm; Lorke, Axel:
Quantum confinement in EuO heterostructures
In: Applied Physics Letters (APL), Vol. 109 (2016), No. 20, p. 202401
2016article/chapter in journal
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Kurzmann, Annika; Geller, Martin Paul; Lorke, Axel; Wieck, A.D.; Labud, P.A.; Merkel, B.:
Optical Blocking of Electron Tunneling into a Single Self-Assembled Quantum Dot
In: Physical Review Letters, Vol. 117 (2016), No. 1, p. 017401
2016article/chapter in journal
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Braam, Daniel; Kushida, Soh; Niemöller, Robert; Prinz, Günther; Saito, Hitoshi; Kanbara, Takaki; Kuwabara, Junpei; Yamamoto, Yohei; Lorke, Axel:
Optically induced mode splitting in self-assembled, high quality-factor conjugated polymer microcavities
In: Scientific Reports, Vol. 6 (2016)
2016dissertation
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Braam, Daniel:
Optische Eigenschaften photolumineszierender Mikro- und Nanostrukturen
Duisburg, Essen, 2016
2016article/chapter in journal
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Miranda, A.; Halim, J.; Barsoum, M.W.; Lorke, Axel:
Electronic properties of freestanding Ti3C2Tx MXene monolayers
In: Applied Physics Letters (APL), Vol. 108 (2016), No. 3, p. 033102
2016article/chapter in journal
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Ernst, Philipp; Schleberger, Marika; Lorke, Axel; Sonntag, J.; Kozubek, Roland; Madauß, L.:
Irradiation of graphene field effect transistors with highly charged ions
In: Nuclear Instruments and Methods in Physics Research Section B : Beam Interactions with Materials and Atoms, Vol. 382 (2016), pp. 71 - 75
2016article/chapter in journal
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Aikyo, Yusuke; Lorke, Axel; Kuwabara, Junpei; Braam, Daniel; Kushida, Soh:
Enwrapping Conjugated Polymer Microspheres with Graphene Oxide Nanosheets
In: Chemistry Letters, Vol. 45 (2016), No. 8, pp. 1024 - 1026
2016article/chapter in journal
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Okada, Daichi; Nakamura, Takashi; Braam, Jan-Henrik; Lorke, Axel:
Color-Tunable Resonant Photoluminescence and Cavity-Mediated Multistep Energy Transfer Cascade
In: ACS Nano, Vol. 10 (2016), No. 1, pp. 7058 - 7063
2016book article/chapter in Proceedings
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Wiggers, Hartmut; Lorke, Axel:
Silicon nanocrystals
In: Handbook of Nanophysics: Nanoparticles and Quantum Dots : Vol.3 - CRC Press, 2016
2016dissertation
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Theis, Jens:
Nanopartikel aus der Gasphase für optische und elektrische Anwendungen
Duisburg, Essen, 2016
2016article/chapter in journal
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Kushida, Soh; Braam, Daniel; Dao, Thang Duy; Saito, Hitoshi; Shibasaki, Kosuke; Ishii, Satoshi; Nagao, Tadaaki; Saeki, Akinori; Kuwabara, Junpei; Kanbara, Takaki; Kijima, Masashi; Lorke, Axel; Yamamoto, Yohei:
Conjugated Polymer Blend Microspheres for Efficient, Long-Range Light Energy Transfer
In: ACS Nano, Vol. 10 (2016), No. 5, pp. 5543 - 5549
2016book article/chapter in Proceedings
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Müller, Joachim; Dammann, Elmar; Fischer, Hans Ernst; Lang, Martin; Borowski, Andreas; Lorke, Axel; Menkenhagen, Jochen:
Physikalisch-mathematische Modellierung in der Physik und im Bauingenieurwesen als Prädiktor für Studienerfolg
In: Authentizität und Lernen : Das Fach in der Fachdidaktik / Maurer, Christian (Eds.). - GDCP 2015 : Jahrestagung der Gesellschaft für Didaktik der Chemie und Physik, 14.-17.09.2015, Berlin - 1. Aufl., Regensburg: Universität Regensburg, 2016 - (Gesellschaft für Didaktik der Chemie und Physik ; 36), pp. 389 - 391
2015article/chapter in journal
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Zhou, Daming; Lorke, Axel:
Wave functions of elliptical quantum dots in a magnetic field
In: American Journal of Physics, Vol. 83 (2015), No. 3, pp. 205 - 209
2015article/chapter in journal
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Sommer, Benedikt; Sonntag, Jens; Ganczarczyk, Arkadius; Braam, Daniel; Prinz, Günther; Lorke, Axel; Geller, Martin Paul:
Electron-beam induced nano-etching of suspended graphene
In: Scientific Reports, Vol. 5 (2015), p. 7781
2015article/chapter in journal
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Kushida, Soh; Braam, Daniel; Pan, Chengjun; Dao, Thang D.; Tabata, Kenichi; Sugiyasu, Kazunori; Takeuchi, Masayuki; Ishii, Satoshi; Nagao, Tadaaki; Lorke, Axel; Yamamoto, Yohei:
Whispering gallery resonance from self-assembled microspheres of highly fluorescent isolated conjugated polymers
In: Macromolecules, Vol. 48 (2015), No. 12, pp. 3928 - 3933
2015article/chapter in journal
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Wennig, S.; Langklotz, Ulrike; Prinz, Günther; Schmidt, A.; Oberschachtsiek, B.; Lorke, Axel; Heinzel, Angelika:
The influence of different pre-treatments of current collectors and variation of the binders on the performance of Li4Ti5O12 anodes for lithium ion batteries
In: Journal of Applied Electrochemistry, Vol. 45 (2015), No. 10, pp. 1043 - 1055
2015article/chapter in journal
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Zhou, Daming; Beckel, Andreas; Ludwig, Arne; Wieck, Andreas. D.; Geller, Martin Paul; Lorke, Axel:
Tuning the tunneling probability between low-dimensional electron systems by momentum matching
In: Applied Physics Letters (APL), Vol. 106 (2015), No. 24, p. 243105
2015article/chapter in journal
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Bendt, Georg; Sonntag, Jens; Lorke, Axel; Assenmacher, Wilfried; Hagemann, Ulrich; Schulz, Stephan:
Van der Waals epitaxial MOCVD-growth of (BixSb1-x)2Te3 (0<x<1) films
In: Semiconductor Science and Technology, Vol. 30 (2015), No. 8, p. 085021
2015article/chapter in journal
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Stegmann, Thomas; Lorke, Axel:
Edge magnetotransport in graphene : A combined analytical and numerical study
In: Annalen der Physik, Vol. 527 (2015), No. 9-10, pp. 723 - 736
2015book article/chapter in Proceedings
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Kushida, Soh; Braam, Daniel; Lorke, Axel; Yamamoto, Yohei:
Whispering gallery mode photoemission from self-assembled poly-para-phenylenevinylene microspheres
In: International Conference of Computational Methods in Sciences and Engineering 2015 / Simos, Theodore E.; Kalogiratou, Zacharoula; Monovasilis, Theodore (Eds.). - International Conference of Computational Methods in Sciences and Engineering 2015 (ICCMSE 2015) : Athens, Greece, 20-23 March 2015 - Melville New York: AIP Publishing, 2015 - (AIP Conference Proceedings ; 1702), p. 090046
2015article/chapter in journal
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Kurzmann, Annika; Beckel, Andreas; Ludwig, A.; Wieck, Andreas D.; Lorke, Axel; Geller, Martin Paul:
The effect of charged quantum dots on the mobility of a two-dimensional electron gas : how important is the Coulomb scattering?
In: Journal of Applied Physics, Vol. 117 (2015), No. 5, p. 054305
2015article/chapter in journal
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Theis, Jens; Bywalez, Robert; Küpper, Sebastian; Lorke, Axel; Wiggers, Hartmut:
Charge storage in β-FeSi2 nanoparticles
In: Journal of Applied Physics, Vol. 117 (2015), No. 5, p. 054303
2014dissertation
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Beckel, Andreas:
Zeitaufgelöste Transportspektroskopie an gekoppelten 2D-0D-Systemen
Duisburg, Essen, 2014
2014article/chapter in journal
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Felbier, Patrick; Yang, Jihua; Theis, Jens; Liptak, Richard William; Wagner, Andrew; Lorke, Axel; Bacher, Gerd; Kortshagen, Uwe:
Highly Luminescent ZnO Quantum Dots Made in a Nonthermal Plasma
In: Advanced Functional Materials, Vol. 24 (2014), No. 14, pp. 1988 - 1993
2014article/chapter in journal
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Nowozin, Tobias; Beckel, Andreas; Bimberg, D.; Lorke, Axel; Geller, Martin Paul:
3 ns single-shot read-out in a quantum dot-based memory structure
In: Applied Physics Letters (APL), Vol. 104 (2014), No. 5, p. 053111
2014book article/chapter in collection
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Lei, Wen; Lorke, Axel:
Growth and spectroscopy of semiconductor quantum rings
In: Physics of Quantum Rings / Fomin, Vladimir M. (Eds.). - Heidelberg [u.a.]: Springer, 2014 - (NanoScience and Technology ; 87), pp. 27 - 59
2014article/chapter in journal
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Richter, Johannes; Strassner, Johannes; Loeber, Thomas H.; Fouckhardt, Hennig; Nowozin, Tobias; Bonato, Leo; Bimberg, Dieter; Braam, Daniel; Lorke, Axel:
GaSb quantum dots on GaAs with high localization energy of 710 meV and an emission wavelength of 1.3 µm
In: Journal of Crystal Growth, Vol. 404 (2014), pp. 48 - 53
2014article/chapter in journal
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Tabata, Kenichi; Braam, Daniel; Kushida, Soh; Tong, Liang; Kuwabara, Junpei; Kanbara, Takaki; Beckel, Andreas; Lorke, Axel; Yamamoto, Yohei:
Self-assembled conjugated polymer spheres as fluorescent microresonators
In: Scientific Reports, Vol. 4 (2014), p. 5902
2014article/chapter in journal
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Sasaki, Takayuki; Tabata, Kenichi; Tsukagoshi, Kazuhito; Beckel, Andreas; Lorke, Axel; Yamamoto, Yohei:
Control of molecular orientation and morphology in organic bilayer solar cells : Copper phthalocyanine on gold nanodots
In: Thin Solid Films, Vol. 562 (2014), pp. 467 - 470
2014article/chapter in journal
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Beckel, Andreas; Kurzmann, Annika; Geller, Martin Paul; Ludwig, A.; Wieck, A. D.; König, Jürgen; Lorke, Axel:
Asymmetry of charge relaxation times in quantum dots: The influence of degeneracy
In: EPL (Europhysics Letters), Vol. 106 (2014), No. 4, p. 47002
2014article/chapter in journal
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Beckel, Andreas; Ludwig, A.; Wieck, A. D.; Lorke, Axel; Geller, Martin Paul:
Time-resolved transconductance spectroscopy on self-assembled quantum dots : spectral evolution from single- into many-particle states
In: Physical Review B : Condensed matter and materials physics, Vol. 89 (2014), No. 15, p. 155430
2013dissertation
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Ganczarczyk, Arkadius:
Präparation von nanostrukturierten zweidimensionalen Elektronengasen und die Charakterisierung ihrer linearen und nichtlinearen Transporteigenschaften
Duisburg, Essen, 2013
2013article/chapter in journal
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Braam, Daniel; Mölleken, Andreas; Prinz, Günther; Notthoff, Christian; Geller, Martin Paul; Lorke, Axel:
Role of the ligand layer for photoluminescence spectral diffusion of CdSe/ZnS nanoparticles
In: Physical Review B : Condensed matter and materials physics, Vol. 88 (2013), No. 12, pp. 125302-1 - 125302-6
2013article/chapter in journal
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Stegmann, Thomas; Wolf, Dietrich; Lorke, Axel:
Magnetotransport along a boundary : from coherent electron focusing to edge channel transport
In: New Journal of Physics (NJP), Vol. 15 (2013), No. 11, p. 113047
2012article/chapter in journal
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Nowozin, T.; Marent, A.; Bimberg, D.; Beckel, Andreas; Marquardt, Bastian; Lorke, Axel; Geller, Martin Paul:
Time-resolved detection of many-particle hole states in InAs/GaAs quantum dots using a two-dimensional hole gas up to 77 K
In: Physica Status Solidi (C) : Current Topics in Solid State Physics, Vol. 9 (2012), No. 2, pp. 243 - 246
2012book article/chapter in collection
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Wiggers, Hartmut; Fikri, Mustapha; Wlokas, Irenäus; Roth, Paul; Schulz, Christof:
Synthesis of tailored nanoparticles in flames : chemical kinetics, in-situ diagnostics, numerical simulation, and process development
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 3 - 48
2012book article/chapter in collection
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Sahoo, Sanjubala; Gruner, Markus; Hucht, Alfred; Rollmann, Georg; Entel, Peter:
Nucleation, structure and magnetism of transition metal clusters from first principles
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 77 - 98
2012book article/chapter in collection
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Gutsche, Christoph; Regolin, Ingo; Lysov, Andrey; Blekker, Kai; Do, Quoc-Thai; Prost, Werner; Tegude, Franz-Josef:
III/V Nanowires for electronic and optoelectronic applications
In: Nanoparticles from the gas phase : formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 357 - 385
2012article/chapter in journal
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Jnawali, Giriraj; Klein, Claudius; Wagner, Thomas; Hattab, Hichem; Zahl, Percy; Acharya, Danda P.; Sutter, Peter; Lorke, Axel; Horn-von Hoegen, Michael:
Manipulation of electronic transport in the Bi(111) surface state
In: Physical Review Letters, Vol. 108 (2012), No. 26, p. 266804
2012article/chapter in journal
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Beckel, Andreas; Zhou, Daming; Marquardt, Bastian; Reuter, Dirk; Wieck, Andreas D.; Geller, Martin Paul; Lorke, Axel:
Momentum matching in the tunneling between 2-dimensional and 0-dimensional electron systems
In: Applied Physics Letters (APL), Vol. 100 (2012), No. 23, p. 232110
2012book article/chapter in collection
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Vinaji, Sasa; Bacher, Gerd; Mertin, Wolfgang:
Material and doping contrast in III/V nanowires probed by Kelvin probe force microscopy
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 185 - 206
2012book article/chapter in collection
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Hartner, Sonja; Schwesig, Dominik; Plümel, Ingo; Wolf, Dietrich; Lorke, Axel; Wiggers, Hartmut:
Electrical transport in semiconductor nanoparticle arrays : Conductivity, sensing and modeling
In: Nanoparticles from the Gasphase : Formation, Structure, Properties - Berlin: Springer, 2012 - (NanoScience and Technology), pp. 231 - 271
2012book article/chapter in collection
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Meier, Cedrik; Lorke, Axel:
Optical properties of silicon Nanoparticles
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 209 - 230
2012book article/chapter in collection
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Djenadic, Ruzica; Winterer, Markus:
Chemical vapor synthesis of nanocrystalline oxides
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 49 - 76
2012book article/chapter in collection
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Acet, Mehmet; Spasova, Marina; Elsukova, Anna:
Diffusion Enhancement in FePt Nanoparticles for L10 Stability
In: Nanoparticles from the gas phase : formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 123 - 139
2012book article/chapter in collection
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Wolf, Dietrich; Brendel, Lothar; Fendrich, Markus; Zinetullin, R.:
Nanopowder sintering
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 161 - 183
2012book article/chapter in collection
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Schmitz-Antoniak, Carolin; Friedenberger, Nina; Trunova, Anastasia; Meckenstock, Ralf; Kronast, F.; Fauth, Kai; Farle, Michael; Wende, Heiko:
Intrinsic magnetism and collective magnetic properties of size-selected nanoparticles
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 273 - 302
2012book article/chapter in collection
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Schneider, Lars; Bacher, Gerd:
Optical spectroscopy on magnetically doped semiconductor nanoparticles
In: Nanoparticles from the gasphase : formation, structure, properties / Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology), pp. 303 - 327
2012collection
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Lorke, Axel; Winterer, Markus; Schmechel, Roland; Schulz, Christof (Eds.):
Nanoparticles from the gasphase : formation, structure, properties
Heidelberg: Springer, 2012
(NanoScience and technology)
2012book article/chapter in collection
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Grünebohm, Anna; Hucht, Alfred; Meyer, Ralf; Comtesse, Denis; Entel, Peter:
Simulation of cluster sintering, dipolar chain formation, and ferroelectric nanoparticulate systems
In: Nanoparticles from the gas phase : Formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and Technology), pp. 139 - 158
2012article/chapter in journal
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Ganczarczyk, Arkadius; Rojek, Stephan; Quindeau, Andy Udo; Geller, Martin Paul; Hucht, Alfred; Notthoff, Christian; König, Jürgen; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Transverse rectification in density-modulated two-dimensional electron gases
In: Physical Review B : Condensed matter and materials physics, Vol. 86 (2012), No. 8, Article 085309
2012Lecture / Speech
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Lorke, Axel:
Die ganz kleine Form : Eigenschaften und Anwendungen von Nanostrukturen
Die kleine Form, 24. Oktober 2012, Essen
2012
(Die kleine Form 2012/2013)
2012book article/chapter in collection
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Busch, Claudia; Bubel, Simon; Theissmann, Ralf; Schmechel, Roland:
Metal Oxide Thin-Film Transistors from Nanoparticles and Solutions
In: Nanoparticles from the gas phase : formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and Technology), pp. 387 - 409
2012book article/chapter in collection
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Nedic, A.; Kruis, Frank Einar:
Gas Sensors Based on Well-Defined Nanostructured Thin Films
In: Nanoparticles from the gas phase : formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology)
2012book article/chapter in collection
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Kala, S.; Rouenhoff, M.; Theissmann, Ralf; Kruis, Frank Einar:
Synthesis and Film Formation of Monodisperse Nanoparticles and Nanoparticle Pairs
In: Nanoparticles from the gas phase : formation, structure, properties / Lorke, Axel (Eds.). - Heidelberg: Springer, 2012 - (NanoScience and technology)
2012article/chapter in journal
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Chavez, Ruben; Angst, Sebastian; Maize, Kerry D.; Gondorf, Andreas; Schierning, Gabi; Wolf, Dietrich E.; Lorke, Axel; Shakouri, Ali H.:
Thermoreflectance Imaging of Percolation Effects and Dynamic Resistance in Indium Tin Oxide Nanoparticle Layers
In: Journal of Applied Physics, Vol. 112 (2012), No. 8, Article 083705
2011dissertation
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Marquardt, Bastian:
Elektrische Präparation und Detektion von Vielteilchen-Zuständen in selbstorganisierten Quantenpunkten
Duisburg, Essen, 2011
2011dissertation
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Gondorf, Andreas:
Optische und elektronische Eigenschaften von halbleitenden Nanopartikeln
Duisburg, Essen, 2011
2011article/chapter in journal
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Marquardt, Bastian; Geller, Martin Paul; Baxevanis, Benjamin; Pfannkuche, Daniela; Wieck, Andreas D.; Reuter, Dirk; Lorke, Axel:
Transport spectroscopy of non-equilibrium many-particle spin states in self-assembled quantum dots
In: Nature Communications, Vol. 2 (2011), p. 209
2011article/chapter in journal
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Notthoff, Christian; Reuter, Dirk; Wieck, Andreas D.; Lorke, Axel:
Edge-induced magnetoplasmon excitation in a two-dimensional electron gas under quantum Hall conditions
In: Physical Review B : Condensed matter and materials physics, Vol. 84 (2011), No. 3, p. 035311
2011dissertation
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Offer, Matthias:
Optische und optoelektronische Charakterisierung von halbleitenden Nanostrukturen
Duisburg, Essen, 2011
2011article/chapter in journal
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Deviatov, E. V.; Lorke, Axel; Biasiol, G.; Sorba, L.:
Energy transport by neutral collective excitations at the quantum Hall edge
In: Physical Review Letters, Vol. 106 (2011), No. 25, p. 256802
2011article/chapter in journal
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Gondorf, Andreas; Geller, Martin Paul; Weißbon, J.; Lorke, Axel; Inhester, M.; Prodi-Schwab, Anna; Adam, Dieter:
Mobility and carrier density in nanoporous indium tin oxide films
In: Physical Review B : Condensed matter and materials physics, Vol. 83 (2011), No. 21, p. 212201
2011article/chapter in journal
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Gupta, Anoop; Khalil, Ahmed S. G.; Offer, Matthias; Geller, Martin Paul; Winterer, Markus; Lorke, Axel; Wiggers, Hartmut:
Synthesis and ink-jet printing of highly luminescing silicon nanoparticles for printable electronics
In: Journal of Nanoscience and Nanotechnology, Vol. 11 (2011), No. 6, pp. 5028 - 5033
2011article/chapter in journal
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Marquardt, Bastian; Beckel, Andreas; Lorke, Axel; Wieck, Andreas D.; Reuter, Dirk; Geller, Martin Paul:
The influence of charged InAs quantum dots on the conductance of a two-dimensional electron gas : mobility vs. carrier concentration
In: Applied Physics Letters (APL), Vol. 99 (2011), No. 22, p. 223510
2011article/chapter in journal
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Nowozin, Tobias; Marent, Andreas; Hönig, Gerald; Schliwa, Andrei; Bimberg, Dieter; Beckel, Andreas; Marquardt, Bastian; Lorke, Axel; Geller, Martin Paul:
Time-resolved high-temperature detection with single charge resolution of holes tunneling into many-particle quantum dot states
In: Physical Review B : Condensed matter and materials physics, Vol. 84 (2011), No. 7, 1-7, art. no. 075309
2011book article/chapter in Proceedings
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Marquardt, Bastian; Geller, Martin Paul; Baxevanis, Benjamin; Pfannkuche, Daniela; Wieck, Andreas D.; Reuter, Dirk; Lorke, Axel; Ihm, Jisoon; Cheong, Hyeonsik:
All-electrical transport spectroscopy of non-equilibrium many-particle states in self-assembled quantum dots
In: Physics of semiconductors / Ihm, Jisoon; Cheong, Hyeonsik (Eds.). - 30th International Conference on the Physics of Semiconductors, Seoul, Korea, 25-30 July 2010 - Melville: AIP, 2011 - (AIP conference proceedings ; 1399), pp. 351 - 352
2011article/chapter in journal
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Deviatov, E. V.; Ganczarczyk, Arkadius; Lorke, Axel; Biasiol, G.; Sorba, L.:
Quantum Hall Mach-Zehnder interferometer far beyond equilibrium
In: Physical Review B : Condensed matter and materials physics, Vol. 84 (2011), No. 23, Art. Nr. 235313
2011article/chapter in journal
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Ganczarczyk, Arkadius; Geller, Martin Paul; Lorke, Axel:
XeF2 gas-assisted focused-electron-beam-induced etching of GaAs with 30 nm resolution
In: Nanotechnology, Vol. 22 (2011), No. 4, 1-5, art. no. 045301
2010article/chapter in journal
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Piegdon, Karoline; Offer, Matthias; Lorke, Axel; Urbanski, Martin; Hoischen, Andreas; Kitzerow, Heinz-S.; Declair, Stefan; Förstner, Jens; Meier, Thorsten; Reuter, Dirk; Wieck, Andreas D.; Meier, Cedrik:
Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 42 (2010), No. 10, pp. 2552 - 2555
2010article/chapter in journal
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Theis, Jens; Geller, Martin Paul; Lorke, Axel; Wiggers, Hartmut; Wieck, Andreas D.; Meier, Cedrik:
Electroluminescence from silicon nanoparticles fabricated from the gas phase
In: Nanotechnology, Vol. 21 (2010), No. 45, 455201 (5pp)
2010article/chapter in journal
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Notthoff, Christian; Lorke, Axel; Rachor, Kevin; Heitmann, Detlef; Reuter, Dirk:
THz-photoconductivity of quantum hall systems in Quasi-Corbino-Geometry
In: Journal of Low Temperature Physics, Vol. 159 (2010), No. 1, pp. 193 - 196
2010article/chapter in journal
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Marquardt, Bastian; Geller, Martin Paul; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
A two-dimensional electron gas as a sensitive detector to observe the charge carrier dynamics of self-assembled QDs
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 42 (2010), No. 10, pp. 2598 - 2601
2010book article/chapter in collection
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Theis, J.; Meier, Cedrik; Lorke, Axel; Wiggers, Hartmut:
Electroluminescence from Silicon Nanoparticles Integrated in Semiconductor Heterostructures
In: Materials Research Society Spring Meeting - San Francisco, 2010
2010book article/chapter in collection
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Lorke, Axel; Gondorf, Andreas; Offer, Matthias; Theis, J.; van der Schoot, N.; Meier, Cedrik; Wiggers, Hartmut:
Silicon Nanoparticles for Photovoltaic and Optoelectronic Applications
In: Materials Research Society Srping Meeting - San Francisco, 2010
2010article/chapter in journal
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Jnawali, Giriraj; Wagner, Th.; Hattab, Hichem; Möller, Rolf; Lorke, Axel; Horn-von Hoegen, Michael:
Two-dimensional electron transport and scattering in Bi(111) surface states
In: e-Journal of Surface Science and Nanotechnology, Vol. 8 (2010), pp. 27 - 31
2010article/chapter in journal
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Geller, Martin Paul; Marquardt, Bastian; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
A two-dimensional electron gas as a sensitive detector for time-resolved tunneling measurements on self-assembled quantum dots
In: Nanoscale Research Letters, Vol. 5 (2010), No. 5, pp. 829 - 833
2010article/chapter in journal
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Ganczarczyk, Arkadius; Voßen, S.; Geller, Martin Paul; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
A voltage-tunable in-plane diode in a two-dimensional-electron system
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 42 (2010), No. 4,, pp. 1216 - 1219
2010article/chapter in journal
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Lei, Wen; Notthoff, Christian; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Electronic structure of self-assembled InGaAs/GaAs quantum rings studied by capacitance-voltage spectroscopy
In: Applied Physics Letters (APL), Vol. 96 (2010), No. 3, pp. 033111-1 - 033111-3
2010article/chapter in journal
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Wen, Lei; Notthoff, Christian; Peng, Jie; Reuter, Dirk; Wieck, Andreas D.; Bester, Gabriel; Lorke, Axel:
“Artificial atoms” in magnetic fields : Wave-function shaping and phase-sensitive tunneling
In: Physical Review Letters, Vol. 105 (2010), No. 17, p. 176804
2010book article/chapter in Proceedings
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Marquardt, Bastian; Moujib, Hicham; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.; Geller, Martin Paul; Sergienko, Alexander; Villoresi, Paolo:
A 2D Electron Gas for Studies on Tunneling Dynamics and Charge Storage in Self-assembled Quantum Dots
In: Quantum Communication and Quantum Networking : Revised Selected Papers / Sergienko, Alexander; Pascazio, Saverio; Villoresi, Paolo (Eds.). - First International Conference, QuantumComm 2009, Naples, Italy, October 26-30, 2009 - Berlin [u.a.]: Springer, 2010 - (Lecture Notes of the Institute for Computer Sciences ; 36), pp. 180 - 188
2010article/chapter in journal
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Piegdon, Karoline; Declair, Stefan; Förstner, Jens; Meier, Thorsten; Matthias, Heiner; Urbanski, Martin; Kitzerow, Heinz-S.; Reuter, Dirk; Wieck, Andreas D.; Lorke, Axel; Meier, Cedrik:
Tuning quantum-dot based photonic devices with liquid crystals
In: Optics Express (OpEx), Vol. 18 (2010), No. 8, pp. 7946 - 7954
2010article/chapter in journal
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Deviatov, E.V.; Lorke, Axel; Biasiol, Giorgio; Sorba, Lucia; Wegscheider, Werner:
Local investigation of the energy gap within the incompressible strip in the quantum Hall regime
In: JETP Letters, Vol. 92 (2010), No. 1, pp. 67 - 70
2009book article/chapter in collection
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Meier, Cedrik; Lüttjohann, Stephan; Offer, Matthias; Wiggers, Hartmut; Lorke, Axel:
Silicon Nanoparticles: Excitonic Fine Structure and Oscillator Strength
In: Advances in Solid State Physics - 2009 - (Advances in Solid State Physics ; 48), Vol. 48, pp. 79 - 90
2009article/chapter in journal
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Akcoeltekin, S.; El Kharrazi, Mourad; Koehler, B.; Lorke, Axel; Schleberger, Marika:
Graphene on insulating crystalline substrates
In: Nanotechnology, Vol. 20 (2009), No. 15, p. 155601
2009article/chapter in journal
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Marquardt, Bastian; Geller, Martin Paul; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Using a two-dimensional electron gas to study nonequilibrium tunneling dynamics and charge storage in self-assembled quantum dots
In: Applied Physics Letters (APL), Vol. 95 (2009), No. 2, pp. 022113-1 - 022113-3
2009article/chapter in journal
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Deviatov, E. V.; Marquardt, Bastian; Lorke, Axel; Biasiol, G.; Sorba, L.:
Interference effects in transport across a single incompressible strip at the edge of the fractional quantum Hall system
In: Physical Review B : Condensed matter and materials physics, Vol. 79 (2009), No. 12, pp. 125312-1 - 125312-7
2009article/chapter in journal
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Ganczarczyk, Arkadius; Notthoff, Christian; Geller, Martin Paul; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Transverse ballistic rectification in density-modulated 2D-systems
In: Physics of semiconductors, Vol. 1199 (2009), pp. 143 - 144
2009article/chapter in journal
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Lei, Wen; Notthoff, Christian; Offer, Matthias; Meier, Cedrik; Lorke, Axel; Jagadish, Chennupati; Wieck, Andreas D.:
Electron energy structure of self-assembled ln(Ga)As nanostructures probed by capacitance-voltage spectroscopy and one-dimensional numerical simulation
In: Journal of Materials Research (JMR), Vol. 24 (2009), No. 7, pp. 2179 - 2184
2009article/chapter in journal
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Notthoff, Christian; Rachor, Kevin; Heitmann, Detlef; Lorke, Axel:
Terahertz photoresponse of a quantum Hall edge-channel diode
In: Physical Review B : Condensed matter and materials physics, Vol. 80 (2009), No. 20, pp. 205320-1 - 205320-5
2009Lecture / Speech
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Regolin, Ingo; Gutsche, C.; Lysov, A.; Prost, Werner; Malek, Margarethe; Vinaji, S.; Mertin, Wolfgang; Bacher, Gerd; Offer, Matthias; Lorke, Axel; Tegude, Franz-Josef:
Axial doping profile in VLS grown GaAs:Zn nanowires
13th European Workshop on Metalorganic Vapor Phase Epitaxy, 7. – 10. Juni 2009, Ulm, Germany
2009
2008article/chapter in journal
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Marquardt, Bastian; Russ, Marco; Lorke, Axel; Meier, Cedrik; Reuter, Dirk; Wieck, Andreas D.:
Quantum dots as tunable scatterers for 2D-and 1D-electron systems
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 40 (2008), No. 6, pp. 2075 - 2077
2008article/chapter in journal
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Deviatov, E.V.; Dolgopolov, V.T.; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Transport across the incompressible strip in the fractional quantum Hall effect regime
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 40 (2008), No. 5, pp. 1232 - 1234
2008article/chapter in journal
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Deviatov, E. V.; Lorke, Axel:
Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime
In: Physica Status Solidi (B) : Basic Solid State Physics, Vol. 245 (2008), No. 2, pp. 366 - 377
2008article/chapter in journal
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Deviatov, E. V.; Lorke, Axel:
Experimental realization of a Fabry-Perot-type interferometer by copropagating edge states in the quantum Hall regime
In: Physical Review B : Condensed matter and materials physics, Vol. 77 (2008), No. 16, p. 161302
2008article/chapter in journal
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Notthoff, Christian; Lorke, Axel; Reuter, Dirk:
High sensitivity far-infrared detection by resonant inter-Landau-level scattering
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 40 (2008), No. 5, pp. 1328 - 1331
2008book article/chapter in collection
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Hartner, Sonja; Meier, Cedrik; Lorke, Axel; Wiggers, Hartmut:
Electrical Characterization of Microwave Synthesized Germanium Nanoparticle Ensembles
In: Materials Research Society Fall Meeting - Boston, 2008
2008Lecture / Speech
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Hartner, Sonja; Ali, Moazzam; Wiggers, Hartmut; Lorke, Axel; Winterer, Markus:
Magnetotransport and Transport Properties of Compacted ZnO Nanoparticles
Materials Research Society Spring Meeting, San Francisco, 2008
San Francisco, 2008
2008book article/chapter in collection
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Plümel, Ingo; Wiggers, Hartmut; Lorke, Axel:
In-Situ Investigation of the Mechanical and Electrical Properties of Nanosized Silicon Powders during Compaction
In: Materials Science and Engineering MSE 2008 / Deutsche Gesellschaft für Materialkunde e.V. (Eds.). - Nürnberg, 2008
2008article/chapter in journal
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Deviatov, E. V.; Lorke, Axel; Wegscheider, Werner:
Manifestation of a complex edge excitation structure in the quantum Hall regime at high fractional filling factors
In: Physical Review B : Condensed matter and materials physics, Vol. 78 (2008), No. 3, pp. 035310-1 - 035310-5
2008article/chapter in journal
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Lei, Wen; Offer, Matthias; Lorke, Axel; Notthoff, Christian; Meier, Cedrik; Wibbelhoff, Oliver; Wieck, Andreas D.:
Probing the band structure of InAs/GaAs quantum dots by capacitance-voltage and photoluminescence spectroscopy
In: Applied Physics Letters (APL), Vol. 92 (2008), No. 19, pp. 193111-1 - 193111-3
2008article/chapter in journal
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Lei, Wen; Wibbelhoff, Oliver; Notthoff, Christian; Marquardt, Bastian; Reuter, Dirk; Wieck, Andreas D.; Lorke, Axel:
Magnetic-field-induced modification of the wave-functions in InAs quantum dots
In: Physica E : Low-dimensional Systems and Nanostructures, Vol. 40 (2008), No. 6, pp. 1870 - 1872
2007article/chapter in journal
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Meier, Cedrik; Gondorf, Andreas; Lüttjohann, Stephan; Lorke, Axel; Wiggers, Hartmut:
Silicon nanoparticles : absorption, emission and the nature of the electronic bandgap
In: Journal of Applied Physics, Vol. 101 (2007), No. 10, p. 103112
2007article/chapter in journal
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Lüttjohann, Stephan; Meier, Cedrik; Offer, Matthias; Lorke, Axel; Wiggers, Hartmut:
Temperature-induced crossover between bright and dark exciton emission in silicon nanoparticles
In: EPL (Europhysics Letters), Vol. 79 (2007), No. 3, 37002 (5pp)
2007Lecture / Speech
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Hülser, Tim-Patrick; Onneken, H.; Wiggers, Hartmut; Lorke, Axel:
Self-assembled iron nano chains: Morphology, Electrical and Magnetic properties
International Congress for Particle Technology, PARTEC 2007, 27. - 29.3.2007, Nürnberg, Germany
Nürnberg, 2007
2007book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Lorke, Axel:
Semiconductor Nanoparticles with small size distri-bution: A model system for the characterization of bulk- and grain boundary conduc-tivity
In: 7th International Symposium on Electrochemical Impedance Spectroscopy - Argelès-sur-Mer (Frankreich), 2007
2007book article/chapter in collection
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Hülser, Tim-Patrick; Acet, Mehmet; Wiggers, Hartmut; Lorke, Axel:
Magnetic Properties of Iron Nano Particles Agglomerated in Self Assembled Chains
In: Materials Research Society Fall Meeting - Boston, 2007
2007book article/chapter in collection
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Meier, Cedrik; van der Schoot, N.; Wiggers, Hartmut; Ebbers, André; Lorke, Axel:
Silicon Nanoparticles for Photovoltaic Applications
In: Materials Research Society Spring Meeting - San Francisco, 2007
2007book article/chapter in collection
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Hülser, Tim-Patrick; Ifeacho, Pascal; Wiggers, Hartmut; Lorke, Axel:
Synthesis and Sensing Properties of Tungsten Oxide Nano-particle Thin Films
In: Materials Research Society Fall Meeting - Boston, 2007
2007article/chapter in journal
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Hülser, Tim-Patrick; Lorke, Axel; Ifaecho, P.; Wiggers, Hartmut; Schulz, Christof:
Core and grain boundary sensitivity of tungsten-oxide sensor devices by molecular beam assisted particle deposition
In: Journal of Applied Physics, Vol. 102 (2007), No. 12, p. 124305
2007article/chapter in journal
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Bester, Gabriel; Reuter, Dirk; He, Lixin; Zunger, A.; Kailuweit, P.; Wieck, Andreas D.; Zeitler, Uli; Maan, J. C.; Wibbelhoff, Oliver; Lorke, Axel:
Experimental imaging and atomistic modeling of electron and hole quasiparticle wave functions in InAs/GaAs quantum dots
In: Physical Review B : Condensed matter and materials physics, Vol. 76 (2007), No. 7, pp. 075338-1 - 075338-7
2007article/chapter in journal
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Deviatov, E. V.; Kapustin, A. A.; Dolgopolov, V. T.; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Evidence for the Luttigger liquid density of states in transport across the incompressible stripe at fractional filling factors
In: EPL (Europhysics Letters), Vol. 77 (2007), No. 3, p. 37002
2007article/chapter in journal
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Regolin, Ingo; Sudfeld, Daniela; Lüttjohann, Stephan; Khorenko, Victor; Prost, Werner; Kästner, Jochen; Dumpich, Guenter; Meier, Cedrik; Lorke, Axel; Tegude, Franz-Josef:
Growth and characterisation of GaAs/InGaAs/GaAs nanowhiskers on (1 1 1) GaAs
In: Journal of Crystal Growth, Vol. 298 (2007), pp. 607 - 611
2006article/chapter in journal
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Russ, Marco; Meier, Cedrik; Marquardt, Bastian; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Quantum dot electrons as controllable scattering centers in the vicinity of a two-dimensional electron gas
In: Phase Transitions, Vol. 79 (2006), No. 9/10, pp. 765 - 770
2006article/chapter in journal
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Reuter, D.; Kailuweit, P.; Roescu, R.; Wieck, Andreas D.; Wibbelhoff, Oliver; Lorke, Axel; Zeitler, Uli; Maan, J. C.:
Hole and electron wave functions in self-assembled InAs quantum dots: a comparison
In: Physica Status Solidi (B) - Basic Solid State Physics, Vol. 243 (2006), No. 15, pp. 3942 - 3945
2006article/chapter in journal
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Russ, Marco; Meier, Cedrik; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Role of quantum capacitance in coupled low-dimensional electron systems
In: Physical Review B : Condensed matter and materials physics, Vol. 73 (2006), No. 11, pp. 115334-1 - 115334-6
2006article/chapter in journal
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Meier, Cedrik; Lüttjohann, Stephan; Kravets, Vasyl G.; Nienhaus, Hermann; Lorke, Axel; Wiggers, Hartmut:
Raman properties of silicon nanoparticles
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 32 (2006), No. 1/2, pp. 155 - 158
2006article/chapter in journal
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Hülser, Tim-Patrick; Wiggers, Hartmut; Ifeacho, Pascal; Dmitrieva, Olga; Lorke, Axel:
Morphology, structure and electrical properties of iron nanochains
In: Nanotechnology, Vol. 17 (2006), No. 13, pp. 3111 - 3115
2006article/chapter in journal
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Müller, Thorsten; Lorke, Axel; Reuter, Dirk:
Charge pumping in driven electron ratchets
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 32 (2006), No. 1-2, pp. 528 - 531
2006book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Lorke, Axel:
Impedance Spectroscopy on semi-conducting metal oxide nano particles
In: IPrime Annual Meeting 2006, May 30 - June 2 (Industrial Partnership for Research in Interfacial and Materials Engineering) - Minneapolis, 2006
2006book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Onneken, H.; Acet, Mehmet; Lei, Wen; Lorke, Axel:
Magnetic Properties and Dipole Interactions in Iron Nanowires, consisting of Self-assembled Iron Nanoparticles
In: Materials Research Society Fall Meeting - Boston, 2006
2006book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Ifeacho, Pascal; Lorke, Axel:
Synthesis, Deposition and Electrical Characterization of Tungsten oxide thin film for gas sensing applications
In: European Materials Research Society Spring Meeting - Nice (Frankreich), 2006
2006article/chapter in journal
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Plümel, Ingo; Wiggers, Hartmut; Lorke, Axel:
In-situ Charakterisierung der elektronischen Eigenschaften von Si-Nanopartikeln mittels Impedanzspektroskopie
In: Technische Mitteilungen, Organ des Haus der Technik e.V, Vol. 99 (2006), pp. 68 - 73
2006article/chapter in journal
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Meier, Cedrik; Lüttjohann, Stephan; Kravets, Vasyliy G.; Nienhaus, Hermann; Lorke, Axel; Ifeacho, Pascal; Wiggers, Hartmut; Schulz, Christof; Kennedy, Marcus K.; Kruis, Frank Einar:
Vibrational and defect states in SnOx nanoparticles
In: Journal of Applied Physics, Vol. 99 (2006), No. 11, p. 113108
2006article/chapter in journal
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Entel, Peter; Kleemann, Wolfgang; Lorke, Axel; Herper, Heike:
Special issue: Proceedings of the "International Symposium on Structure and Dynamics on the Nanometer Scale"; Duisberg/Germany, November 10-13, 2005
In: Phase Transitions, Vol. 79 (2006), No. 9/10, p. 691
2006article/chapter in journal
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Deviatov, E. V.; Kapustin, A. A.; Dolgopolov, V.T.; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Equilibration between edge states in the fractional quantum Hall effect regime at high imbalances
In: Physical Review B : Condensed matter and materials physics, Vol. 74 (2006), No. 7, p. 073303
2006article/chapter in journal
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Kaliweit, Peter; Reuter, Dirk; Wieck, Andreas D.; Wibbelhoff, Oliver; Lorke, Axel; Zeitler, Uli; Maan, J. C.:
Mapping of the hole wave functions of self-assembled InAs-quantum dots by magneto-capacitance-voltage spectroscopy
In: Physica E-Low-Dimensional Systems & Nanostructures, Vol. 32 (2006), No. 1/2, pp. 159 - 162
2006article/chapter in journal
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Nienhaus, Hermann; Kravets, Vasyliy; Koutouzov, Sophie; Meier, Cedrik; Lorke, Axel; Wiggers, Hartmut; Kennedy, Marcus K.; Kruis, Frank Einar:
Quantum Size Effect of Valence Band Plasmon Energies in Si and SnOx Nanoparticles
In: Journal of Vacuum Science and Technology B : Nanotechnology and Microelectronics, Vol. 24 (2006), No. 3, pp. 1156 - 1161
2005article/chapter in journal
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Wibbelhoff, Oliver; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Magnetocapacitance probing of the many-particle states in InAs dots
In: Applied Physics Letters, Vol. 86 (2005), No. 9, pp. 092104-1 - 092104-3
2005article/chapter in journal
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Wibbelhoff, Oliver; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Magneto-capacitance imaging of quasi-particle wave functions in quantum dots
In: Physics of semiconductors, Vol. 772 (2005), No. 1, pp. 651 - 652
2005article/chapter in journal
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Wurtz, A.; Müller, T.; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Electrical Readout of the Local Nuclear Polarization in the Quantum Hall Effect: A Hyperfine Battery
In: Physical Review Letters, Vol. 95 (2005), No. 5, pp. 056802-1 - 056802-4
2005article/chapter in journal
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Reuter, D.; Kailuweit, P.; Wieck, Andreas D.; Zeitler, Uli; Wibbelhoff, Oliver; Meier, Cedrik; Lorke, Axel; Maan, J. C.:
Coulomb-interaction-induced incomplete shell filling in the hole system of InAs quantum dots
In: Physical Review Letters, Vol. 94 (2005), No. 2, ohne Seitenangabe
2005article/chapter in journal
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Hülser, Tim-Patrick; Wiggers, Hartmut; Kruis, Frank Einar; Lorke, Axel:
Nanostructured gas sensors and electrical characterization of deposited SnO2 nanoparticles in ambient gas atmosphere
In: Sensors and Actuators B : Chemical, Vol. 109 (2005), No. 1, pp. 13 - 18
2005article/chapter in journal
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Kravets, Vasyl G.; Meier, Cedrik; Konjhodzic, Denan; Lorke, Axel; Wiggers, Hartmut:
Infrared properties of silicon nanoparticles
In: Journal of Applied Physics, Vol. 97 (2005), No. 8, pp. 084306-1 - 084306-5
2005article/chapter in journal
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Deviatov, E. V.; Dolgopolov, V. T.; Wurtz, A.; Lorke, Axel; Wixforth, A.; Wegscheider, Werner; Campman, K. L.; Gossard, Arthur C.:
Topological defects in the edge-state structure in a bilayer electron system
In: Physical Review B : Condensed matter and materials physics, Vol. 72 (2005), No. 4, p. 041305
2005article/chapter in journal
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Luyken, Richard J.; Lorke, Axel; Fricke, M.; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
Coulomb-coupling in vertically aligned self-assembled InAs quantum dots
In: Nanotechnology, Vol. 87 (2005), No. 16, pp. 14 - 18
2005article/chapter in journal
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Lüttjohann, Stefan; Meier, Cedrik; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Screening effects in InAs quantum-dot structures observed by photoluminescence and capacitance-voltage spectra
In: Applied Physics Letters, Vol. 87 (2005), No. 16, p. 163117
2005article/chapter in journal
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Müller, Thorsten; Wurtz, A.; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Wave-form sampling using a driven electron ratchet in a two-dimensional electron system
In: Applied Physics Letters, Vol. 87 (2005), No. 4, pp. 042104-1 - 042104-3
2005book article/chapter in collection
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Hülser, Tim-Patrick; Ifeacho, Pascal; Wiggers, Hartmut; Lorke, Axel:
Fabrication and electrical characterization of gas sensors based on tailored, tin oxide nano-particle
In: Materials Research Society Fall Meeting - Boston, 2005
2005book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Knipping, Jörg; Lorke, Axel:
Self-Assembled Iron Nanowires: Electrical and Magnetic Properties
In: Materials Research Society Spring Meeting - San Francisco, 2005
2005article/chapter in journal
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Kennedy, Marcus K.; Kruis, Frank Einar; Fissan, Heinz; Nienhaus, Hermann; Lorke, Axel; Metzger, Thomas H.:
Effect of in-flight annealing and deposition method on gas-sensitive SnOx films made from size-selected nanoparticles
In: Sensors and Actuators B : Chemical, Vol. 108 (2005), No. 1-2, pp. 62 - 69
2005article/chapter in journal
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Deviatov, E. V.; Dolgopolov, V. T.; Lorke, Axel; Wegscheider, Werner; Wieck, Andreas D.:
Experimental investigation of the edge states structure at fractional filling factors
In: JETP letters, Vol. 82 (2005), No. 8, pp. 539 - 543
2005book article/chapter in Proceedings
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Lüttjohann, Stephan; Meier, Cedrik; Lorke, Axel; Reuter, Dirk; Wieck, Andreas D.:
Emission from neutral and charged excitons in self-organized InAs quantum dots : Band bending vs Pauli blocking
In: Physics of Semiconductors : 27th International Conference on the Physics of Semiconductors - ICPS-27 ; Flagstaff, Arizona, 26-30 July 2004 / Menéndez, José; Van de Walle, Chris G. (Eds.). - 27th International Conference on the Physics of Semiconductors ; ICPS-27 ; 26-30 July 2004, Flagstaff, Arizona, USA - Melville: AIP, 2005 - (AIP Conference Proceedings ; 772), pp. 733 - 734
2005article/chapter in journal
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Müller, Thorsten; Lorke, Axel; Do, Quoc Thai; Tegude, Franz-Josef; Schuh, Dieter; Wegscheider, Werner:
A three-terminal planar selfgating device for nanoelectronic applications
In: Solid State Electronics, Vol. 49 (2005), No. 12, pp. 1990 - 1995
2004article/chapter in journal
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Russ, Marco; Lorke, Axel; Reuter, D.; Schafmeister, P.:
Self-assembled quantum dots as probes for Landau-level spectroscopy
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 22 (2004), No. 1-3, pp. 506 - 509
2004article/chapter in journal
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Wibbelhoff, Oliver; Meier, Cedrik; Lorke, Axel; Schafmeister, P.; Wieck, Andreas D.:
Wave function mapping of self-assembled quantum dots by capacitance spectroscopy
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 21 (2004), No. 2-4, pp. 516 - 520
2004article/chapter in journal
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Wurtz, A.; Deviatov, E. V.; Lorke, Axel; Dolgopolov, V. T.; Reuter, Dirk; Wieck, Andreas D.:
Separately contacted edge states in the fractional quantum Hall regime
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 22 (2004), No. 1-3, pp. 177 - 180
2004article/chapter in journal
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Deviatov, E. V.; Wurtz, A.; Lorke, Axel; Melnikov, M. Yu.; Dolgopolov, V. T.; Reuter, Dirk; Wieck, Andreas D.:
Two relaxation mechanisms observed in transport between spin-split edge states at high imbalance
In: Physical Review B : Condensed matter and materials physics, Vol. 69 (2004), No. 11, pp. 115330-1 - 115330-6
2004article/chapter in journal
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Deviatov, E. V.; Würtz, A.; Lorke, Axel; Melnikov, M. Yu.; Dolgopolov, V. T.; Wixforth, A.; Campman, K. L.; Gossard, Arthur C.:
Manifestation of the bulk phase transition in the edge energy spectrum in a two-dimensional bilayer electron system
In: JETP letters, Vol. 79 (2004), No. 4, pp. 173 - 176
2004book article/chapter in collection
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Hülser, Tim-Patrick; Wiggers, Hartmut; Lorke, Axel:
Production of nanostructured gas sensor arrays and electrical characterization of deposited tin oxide nano-particles in ambient gas atmosphere
In: European Materials Research Society Fall Meeting - Warsaw Sept., 2004
2004article/chapter in journal
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de Haan, S.; Lorke, Axel; Kotthaus, Jörg P.; Bichler, Max; Wegscheider, Werner:
Quantized transport in ballistic rectifiers : sign reversal and step-like output
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 21 (2004), No. 2-4, pp. 916 - 920
2004article/chapter in journal
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de Haan, S.; Lorke, Axel; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
Rectification in mesoscopic systems with broken symmetry : Quasiclassical ballistic versus classical transport
In: Physical Review Letters, Vol. 92 (2004), No. 5, pp. 056806-1 - 056806-4
2003article/chapter in journal
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Ramamoorthy, Ramasamy; Kennedy, Marcus; Nienhaus, Hermann; Lorke, Axel; Kruis, Frank Einar; Fissan, Heinz:
Surface oxidation of monodisperse SnOx nanoparticles
In: Sensors and Actuators B : Chemical, Vol. 88 (2003), No. 3, pp. 281 - 285
2003book article/chapter in collection
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Do, Quoc Thai; Clemens, Hans; Lorke, Axel:
Coulomb blockade systems fabricated by atomic force microscopy
In: Proceedings / 2003 Third IEEE Conference on Nanotechnology, IEEE-NANO 2003 : 12 - 14 August 2003, San Francisco, CA, USA - IEEE Operations Center: IEEE Operations Center, 2003, pp. 774 - 777
2003article/chapter in journal
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Lorke, Axel; Böhm, Stefan; Wegscheider, Werner:
Curved two-dimensional electron gases
In: Superlattices and Microstructures, Vol. 33 (2003), No. 5-6, pp. 347 - 356
2003book article/chapter in collection
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Wiggers, Hartmut; Hülser, Tim-Patrick; Kennedy, Marcus; Kruis, Frank Einar; Fissan, Heinz; Lorke, Axel; Roth, Paul:
Electrical Properties of Nanocrystalline SnO2 Thin Film Sensors Investigated with Impedance Spectroscopy
In: Emerging applications in electronics, optoelectronics, energy and sensors : Chemical Nanotechnology Talks IV ; 01 - 02 October 2003, DECHEMA-Building, Frankfurt am Main - Frankfurt/Main, 2003
2003book article/chapter in collection
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Lorke, Axel; Garcia, Jorge M.; Blossey, Ralf; Luyken, Richard J.; Petroff, Pierre M.:
Self-Organized InGaAs Quantum Rings : Fabrication and Spectroscopy
In: Advances in Solid State Physics - Heidelberg: Springer, 2003 - (Advances in Solid State Physics ; 43), pp. 125 - 137
2002article/chapter in journal
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Wurtz, A.; Wildfeuer, R.; Lorke, Axel; Deviatov, E. V.; Dolgopolov, V. T.:
Separately contacted edge states: A spectroscopic tool for the investigation of the quantum Hall effect
In: Physical Review B : Condensed matter and materials physics, Vol. 65 (2002), No. 7, ohne Seitenangabe
2002article/chapter in journal
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Luyken, Richard J.; Lorke, Axel; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
Charging dynamics in vertically aligned InAs quantum dots
In: Materials Science and Technology, Vol. 18 (2002), No. 7, pp. 725 - 728
2002article/chapter in journal
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Blossey, Ralf; Lorke, Axel:
Wetting droplet instability and quantum ring formation
In: Physical review. E, Statistical, nonlinear and soft matter physics, Vol. 65 (2002), No. 2, pp. 021603-1 - 021603-3
2002Preface (foreword) / Postface in journal
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Lorke, Axel:
Foreword
In: Superlattices and Microstructures, Vol. 31 (2002), No. 1, pp. 1
2002article/chapter in journal
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Lorke, Axel; Blossey, Ralf; Garcia, Jorge M.; Bichler, Max; Abstreiter, G.:
Morphological transformation of InyGa1-yAs islands, fabricated by Stranski-Krastanov growth
In: Materials Science and Engineering B : Solid-State Materials for Advanced Technology, Vol. 33 (2002), No. 5/6, pp. 347 - 356
2001article/chapter in journal
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Warburton, R. J.; Schäflein, C.; Haft, D.; Bickel, F.; Lorke, Axel; Karrai, K.; Garcia, J. M.; Schoenfeld, W.; Petroff, Pierre M.:
Optical emission from single, charge-tunable quantum rings
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 9 (2001), No. 1, pp. 134 - 130
2001book article/chapter in collection
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de Haan, S.; Lorke, Axel; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
Conductance quantization in an array of ballistic constrictions
In: Proceedings of the 25th International Conference on the Physics of Semiconductors : Osaka, Japan, September 17 - 22, 2000. 1 / Miura, Noboru; Ando, T. (Eds.). - Berlin [u.a.]: Springer, 2001 - (Springer proceedings in physics ; 87), pp. 755 - 756
2001article/chapter in journal
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Lorke, Axel; Luyken, Richard J.; Garcia, Jorge M.; Petroff, Pierre M.:
Growth and electronic properties of self-organized quantum rings
In: Japanese Journal of Applied Physics, Vol. 40 (2001), No. Part 1, Nummer 3B, pp. 1857 - 1859
2001article/chapter in journal
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Jager, B. G. L.; Wimmer, S.; Lorke, Axel; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
Edge and bulk effects in Terahertz photoconductivity of an antidot superlattice
In: Physical Review B : Condensed matter and materials physics, Vol. 63 (2001), No. 4, p. 045315
2001article/chapter in journal
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Kegel, I.; Metzger, T. H.; Lorke, Axel; Peisl, J.; Stangl, J.; Bauer, G.; Nordlund, K.; Schoenfeld, W. V.; Petroff, Pierre M.:
Determination of strain fields and composition of self-organized quantum dots using x-ray diffraction
In: Physical Review B : Condensed matter and materials physics, Vol. 63 (2001), No. 3, pp. 035318-1 - 035318-13
2001article/chapter in journal
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Hohberger, E. M.; Lorke, Axel; Wegscheider, Werner; Bichler, Max:
Adiabatic pumping of two-dimensional electrons in a ratchet-type lateral superlattice
In: Applied Physics Letters, Vol. 78 (2001), No. 19, pp. 2905 - 2907
2001article/chapter in journal
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Petroff, Pierre M.; Lorke, Axel; Imamoglu, Atac:
Epitaxially self-assembled quantum dots
In: Physics Today, Vol. 54 (2001), No. 5, pp. 46 - 52
2000article/chapter in journal
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Warburton, R. J.; Schäflein, C.; Haft, D.; Bickel, F.; Lorke, Axel; Karrai, K.; Garcia, J. M.; Schoenfeld, W.; Petroff, Pierre M.:
Optical emission from a charge-tunable quantum ring
In: Nature, Vol. 405 (2000), No. 6789, pp. 926 - 929
2000article/chapter in journal
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Lorke, Axel; Luyken, Richard J.; Govorov, Alexander O.; Kotthaus, Jörg P.; Garcia, Jorge M.; Petroff, Pierre M.:
Spectroscopy of Nanoscopic Semiconductor Rings
In: Physical Review Letters, Vol. 84 (2000), No. 10, pp. 2223 - 2226
2000article/chapter in journal
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Böhm, Stefan; Parak, W. J.; George, M.; Gaub, H. E.; Lorke, Axel:
Characterization of the field-effect addressable potentiometric sensor (FAPS)
In: Sensors and Actuators B : Chemical, Vol. 68 (2000), No. 1-3, pp. 266 - 273
2000article/chapter in journal
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Deutschmann, R. A.; Lorke, Axel; Wegscheider, Werner; Bichler, Max; Abstreiter, G.:
Breakdown of Shubnikov-de Haas oscillations in a short-period 1D lateral superlattice
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 6 (2000), No. 1/4, pp. 561 - 564
2000article/chapter in journal
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Emperador, Augusti; Pi, Marti; Barranco, Manuel; Lorke, Axel:
Far-infrared spectroscopy of nanoscopic InAs rings
In: Physical Review B : Condensed matter and materials physics, Vol. 62 (2000), No. 7, pp. 4573 - 4577
2000article/chapter in journal
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Kegel, I.; Metzger, T. H.; Lorke, Axel; Peisl, J.; Stangl, J.; Bauer, G.; Garcia, Jorge M.; Petroff, Pierre M.:
Nanometer-scale resolution of strain and interdiffusion in self-assembled InAs/GaAs quantum dots
In: Physical Review Letters, Vol. 85 (2000), No. 8, pp. 1694 - 1697
2000article/chapter in journal
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Pettersson, H.; Warburton, R. J.; Lorke, Axel; Karrai, K.; Kotthaus, Jörg P.; Garcia, Jorge M.; Pettroff, Pierre M.:
Excitons in self-assembled quantum ring-like structures
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 6 (2000), No. 1-4, pp. 510 - 513
1999article/chapter in journal
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Song, A. M.; Manus, S.; Streibl, M.; Lorke, Axel; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
A nonlinear transport device with no intrinsic threshold
In: Superlattices and Microstructures, Vol. 25 (1999), No. 1-2, pp. 269 - 272
1999article/chapter in journal
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Song, A. M.; Lorke, Axel; Kotthaus, Jörg P.; Wescheider, Werner; Bichler, Max:
Ballistic magnetotransport in a semiconductor microjunction with broken symmetry
In: Superlattices and Microstructures, Vol. 25 (1999), No. 1-2, pp. 149 - 152
1999article/chapter in journal
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Luyken, Richard J.; Lorke, Axel; Govorov, Alexander O.; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
The dynamics of tunneling into self-assembled InAs dots
In: Applied Physics Letters, Vol. 74 (1999), No. 17, pp. 2486 - 2488
1999article/chapter in journal
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Parak, W. J.; George, M.; Gaub, H. E.; Böhm, Stefan; Lorke, Axel:
The field-effect-addressable potentiometric sensor/stimulator (FAPS) : a new concept for a surface potential sensor and stimulator with spatial resolution
In: Sensors and Actuators B : Chemical, Vol. 58 (1999), No. 1-3, pp. 497 - 504
1999article/chapter in journal
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de Haan, S.; Lorke, Axel; Hennig, R.; Suhrke, M.; Wegscheider, Werner; Bichler, Max:
Magnetotransport properties of arrays of cross-shaped antidots
In: Physical Review B : Condensed matter and materials physics, Vol. 60 (1999), No. 12, pp. 8845 - 8848
1999article/chapter in journal
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Kegel, I.; Metzger, T. H.; Fratzl, P.; Peisl, J.; Lorke, Axel; Garcia, Jorge M.; Petroff, Pierre M.:
Interdependence of strain and shape in self-assembled coherent InAs islands on GaAs
In: EPL (Europhysics Letters), Vol. 45 (1999), No. 2, pp. 222 - 227
1999article/chapter in journal
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Lorke, Axel; Luyken, Richard J.; Fricke, M.; Kotthaus, Jörg P.; Medeiros-Ribeiro, G.; Garcia, Jorge M.; Petroff, Pierre M.:
Electronic structure of nanometer-size quantum dots and quantum rings
In: Microelectronic Engineering, Vol. 47 (1999), No. 1/4, pp. 95 - 99
1998article/chapter in journal
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Song, A. M.; Lorke, Axel; Kriele, A.; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
Nonlinear electron transport in an asymmetric microjunction: A ballistic rectifier
In: Physical Review Letters, Vol. 80 (1998), No. 17, pp. 3831 - 3834
1998article/chapter in journal
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Miller, Barbara Therese; Hansen, Wiebke; Manus, S.; Luyken, Richard J.; Lorke, Axel; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
Fine structure in the spectrum of the few-electron ground states of self-assembled quantum dots
In: Physica B - Condensed matter, Vol. 249-251 (1998), pp. 257 - 261
1998article/chapter in journal
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Metzger, T. H.; Kegel, I.; Paniago, R.; Lorke, Axel; Peisl, J.; Schulze, J.; Eisele, I.; Schittenhelm, P.; Abstreiter, G.:
Shape, size, strain and correlations in quantum dot systems studied by grazing incidence X-ray scattering methods
In: Thin Solid Films, Vol. 336 (1998), No. 1-2, pp. 1 - 8
1998article/chapter in journal
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Luyken, Richard J.; Lorke, Axel; Song, A. M.; Streibl, M.; Kotthaus, Jörg P.; Kadow, C.; English, John H.; Gossard, Arthur C.:
Highly anharmonic potential modulation in lateral superlattices fabricated using epitaxial InGaAs stressors
In: Applied Physics Letters, Vol. 73 (1998), No. 8, pp. 1110 - 1112
1998article/chapter in journal
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Lorke, Axel; Wimmer, S.; Jager, B.; Kotthaus, Jörg P.; Wegscheider, Werner; Bichler, Max:
Far-infrared and transport properties of antidot arrays with broken symmetry
In: Physica B - Condensed matter, Vol. 249-251 (1998), pp. 312 - 316
1998article/chapter in journal
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Kegel, I.; Metzger, T. H.; Peisl, J.; Fratzl, P.; Lorke, Axel; Kotthaus, Jörg P.; Garcia, Jorge M.; Petroff, Pierre M.:
Strain and shape in self-assembled quantum dots studied by X-ray grazing incidence diffraction
In: MRS Proceedings, Vol. 542 (1998), pp. 89 - 94
1998article/chapter in journal
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Lorke, Axel; Luyken, Richard J.:
Many-particle ground states and excitations in nanometer-size quantum structures
In: Physica B - Condensed matter, Vol. 256/258 (1998), pp. 424 - 430
1998book article/chapter in collection
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Parak, W. J.; George, M.; Gaub, H. E.; Böhm, Stefan; Lorke, Axel; White, N. M.:
The Field-Effect-Addressable Potentiometric Sensor (FAPS) - A new concept for a surface potential detector with spatial resolution
In: Eurosensors XII : proceedings of the 12th European Conference on Solid-State Transducers and the 9th UK Conference on Sensors and their Applications, Southampton, UK, 13 - 16 September 1998 / White, Neil M. (Eds.). - Bristol [u.a.]: Inst. of Physics Publ., 1998 - (Sensors series), pp. 1079 - 1082
1997article/chapter in journal
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Rotter, M.; Rocke, C.; Böhm, S.; Lorke, Axel; Wixforth, A.; Ruile, W.; Korte, L.:
Single-chip fused hybrids for acousto-electric and acousto-optic applications
In: Applied Physics Letters, Vol. 70 (1997), No. 16, pp. 2097 - 2099
1997article/chapter in journal
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Miller, B. T.; Hansen, Wiebke; Manus, S.; Luyken, Richard J.; Lorke, Axel; Kotthaus, Jörg P.; Medeiros-Ribeiro, G.; Petroff, Pierre M.:
Few-electron ground states of charge-tunable self-assembled quantum dots
In: Physical Review B : Condensed matter and materials physics, Vol. 56 (1997), No. 11, pp. 6764 - 6769
1997article/chapter in journal
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Deviatov, E. V.; Williams, F.I.B.; Jager, B.; Lorke, Axel; Kotthaus, Jörg P.; Gossard, A.C.:
Excitation of edge magnetoplasmons in a two-dimensional electron gas by inductive coupling
In: Applied Physics Letters, Vol. 71 (1997), No. 25, pp. 3655 - 3657
1997article/chapter in journal
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Haubrich, A. G. C.; Wharam, D. A.; Kriegelstein, H.; Manus, S.; Lorke, Axel; Kotthaus, Jörg P.; Gossard, Arthur C.:
Parallel quantum-point-contacts as high-frequency-mixers
In: Applied Physics Letters, Vol. 70 (1997), No. 24, pp. 3251 - 3253
1997article/chapter in journal
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Garcia, Jorge M.; Medeiros-Ribeiro, Gilberto; Schmidt, Klaus H.; Ngo, T.; Feng, J. L.; Lorke, Axel:
Intermixing and shape changes during the formation of InAs self-assembled quantum dots
In: Applied Physics Letters, Vol. 71 (1997), No. 14, pp. 2014 - 2016
1997article/chapter in journal
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Knipp, P. A.; Reinecke, T. L.; Lorke, Axel; Fricke, M.; Petroff, Pierre M.:
Coupling between LO phonons and electronic excitations of quantum dots
In: Physical Review B : Condensed matter and materials physics, Vol. 56 (1997), No. 3, pp. 1516 - 1519
1997book article/chapter in Proceedings
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Lorke, Axel; Fricke, M.; Miller, Barbara Therese; Haslinger, M.; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.; Shur, Michael S.; Suris, R. A.:
Far-infrared and capacitance spectroscopy of self-assembled InAs quantum dots
In: Compound Semiconductors : Proceedings / Shur, Michael S. (Eds.). - 23th International Symposium on Compound Semiconductors; St. Petersburg, Russia; 23-27 September 1996 - Bristol: Institute of Physics Publishing (IOP), 1997 - (Conference Series / Institute of Physics ; 155), pp. 803 - 808
1997article/chapter in journal
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Petroff, Pierre M.; Schmidt, Klaus H.; Medeiros-Ribeiro, Gilberto; Lorke, Axel; Kotthaus, Jörg P.:
Size quantization and zero dimensional effects in self assembled semiconductor quantum dots
In: Japanese Journal of Applied Physics, Vol. 36 (1997), No. Part 2, Nummer 6B, pp. 4068 - 4072
1996article/chapter in journal
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Wendel, M.; Irmer, B.; Cortes, J.; Kaiser, R.; Lorenz, H.; Kotthaus, Jörg P.; Lorke, Axel; Williams, E.:
Nanolithography with an atomic force microscope
In: Superlattices and Microstructures, Vol. 20 (1996), No. 3, pp. 349 - 356
1996article/chapter in journal
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Blanke, G.; Lorke, Axel; Kotthaus, Jörg P.; English, John H.; Gossard, Arthur C.; Petroff, Pierre M.:
Photon-assisted tunneling in coupled double quantum wells
In: Solid-State Electronics, Vol. 40 (1996), No. 1-8, pp. 421 - 424
1996article/chapter in journal
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Fricke, M.; Lorke, Axel; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
Shell structure and electron-electron interaction in self-assembled InAs quantum dots
In: EPL (Europhysics Letters), Vol. 36 (1996), No. 3, pp. 197 - 202
1996article/chapter in journal
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Lorke, Axel; Kotthaus, Jörg P.; English, John H.; Gossard, Arthur C.:
Local far-infrared spectroscopy of edge states in the quantum Hall regime
In: Physical Review B : Condensed matter and materials physics, Vol. 53 (1996), No. 3, pp. 1054 - 1058
1995article/chapter in journal
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Pond, Kevin; Gossard, Arthur C.; Lorke, Axel; Petroff, Pierre M.:
Role of steps in epitaxial growth
In: Materials science and engineering. B, Solid state materials for advanced technology, Vol. 30 (1995), No. 2/3, pp. 121 - 125
1995article/chapter in journal
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Lorke, Axel; Pond, Kevin; Petroff, Pierre M.:
On the meandering of steps on vicinal GaAs (100) surfaces
In: Solid state communications : a condensed matter science journal, Vol. 93 (1995), No. 11, pp. 861 - 864
1995article/chapter in journal
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Bressler-Hill, V.; Varma, S.; Lorke, Axel; Nosho, Z.; Petroff, Pierre M.; Weinberg:
Island Scaling in Strained Heteroepitaxy : InAs/GaAs(001)
In: Physical Review Letters, Vol. 74 (1995), No. 16, pp. 3209 - 3212
1995article/chapter in journal
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Lorke, Axel; English, John H.; Gossard, Arthur C.; Petroff, Pierre M.:
Tapered GaAs quantum wells and selectively contactable two‐dimensional electron gases grown by shadow masked molecular‐beam epitaxy
In: Journal of Applied Physics, Vol. 7 (1995), No. 7, pp. 3578 - 3580
1995article/chapter in journal
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Lettau, C.; Hansen, Wolfgang; Kotthaus, Jörg P.; Lorke, Axel; Gossard, Arthur C.; English, John H.:
High-frequency conductivity of ion-beam-defined quantum wires with a self-aligned gate
In: Semiconductor Science and Technology, Vol. 10 (1995), No. 6, pp. 865 - 869
1994article/chapter in journal
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Pond, Kevin; Lorke, Axel; Ibbetson, J.; Bressler-Hill, V.; Maboudian, R.; Weinberg, W. H.; Gossard, Arthur C.; Petroff, Pierre M.:
Step bunching and step equalization on vicinal GaAs(001) surfaces
In: Journal of Vacuum Science and Technology B : Nanotechnology and Microelectronics, Vol. 12 (1994), No. 4, pp. 2689 - 2693
1994article/chapter in journal
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Lorke, Axel; Petroff, Pierre M.:
Transport properties of lateral superlattices grown on vicinal GaAs (100) surfaces
In: Solid-State Electronics, Vol. 37 (1994), No. 4/6, pp. 559 - 562
1994article/chapter in journal
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Akiyama, H.; Sugawara, H.; Kadoya, Y.; Lorke, Axel; Tsujino, S.; Sakaki, H.:
Control of electron population by intersubband optical excitation in potential‐inserted double quantum well structures
In: Applied Physics Letters, Vol. 65 (1994), No. 4, pp. 424 - 426
1994article/chapter in journal
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Bressler-Hill, V.; Lorke, Axel; Varma, S.; Petroff, Pierre M.; Pond, K.; Weinberg, W. H.:
Initial stages of InAs epitaxy on vicinal GaAs(001)-(2×4)
In: Physical Review B : Condensed matter and materials physics, Vol. 50 (1994), No. 12, pp. 8479 - 8487
1994article/chapter in journal
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Krishnamurthy, Mohan; Lorke, Axel; Petroff, Pierre M.:
Self-organized lateral superlattice formation by vertical exchange reactions
In: Surface Science, Vol. 304 (1994), No. 3, pp. L493 - L499
1993article/chapter in journal
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Nguyen, Chanh; Brar, Berinder; Jayaraman, Vijay; Lorke, Axel; Kroemer, Herbert:
Magnetotransport in lateral periodic potentials formed by surface‐layer‐induced modulation in InAs‐AlSb quantum wells
In: Applied Physics Letters, Vol. 63 (1993), No. 16, pp. 2251 - 2253
1993article/chapter in journal
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Krishnamurthy, Mohan; Lorke, Axel; Wassermeier, M.; Williams, D.R.M.; Petroff, Pierre M.:
Molecular‐beam epitaxial growth mechanisms of (Al,Ga)As on vicinal GaAs surfaces : Self‐organization and step bunching
In: Journal of Vacuum Science and Technology B : Nanotechnology and Microelectronics, Vol. 11 (1993), No. 4, pp. 1384 - 1387
1993article/chapter in journal
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Lorke, Axel; Krishnamurthy, Mohan; Petroff, Pierre M.:
The Role of Vertical Exchange in the Growth of GaAs/AlAs Lateral and Vertical Superlattices
In: MRS Proceedings, Vol. 312 (1993), pp. 65 - 70
1992article/chapter in journal
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de Aguiar, F.M.; Wharam, D.A.; Heintzel, Thomas M.; Lorke, Axel; Kotthaus, Jörg P.:
Gate-controlled conductance oscillations in small one-dimensional electron cavities
9th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS-9) ; 8 to July 12, 1991, Nara, Japan
In: Surface Science, Vol. 263 (1992), No. 1-3, pp. 428 - 432
1992article/chapter in journal
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Lorke, Axel:
Static and dynamic conductivity of lateral superlattices
9th International Conference on Electronic Properties of Two-Dimensional Systems (EP2DS-9) ; 8 to July 12, 1991, Nara, Japan
In: Surface Science, Vol. 263 (1992), No. 1-3, pp. 307 - 313
1992article/chapter in journal
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Lorke, Axel; Jejina, Igor; Kotthaus, Jörg P.:
Far-infrared response of lateral superlattices in high magnetic fields
In: Physical Review B : Condensed matter and materials physics, Vol. 46 (1992), No. 19, pp. 12845 - 12848
1991article/chapter in journal
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Lorke, Axel; Kotthaus, Jörg P.; Ploog, Klaus:
Localization in GaAs electron-dots and anti-dots
In: Superlattices and Microstructures, Vol. 9 (1991), No. 1, pp. 103 - 106
1991article/chapter in journal
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Lorke, Axel; Kotthaus, Jörg P.; Ploog, Klaus:
Magnetotransport in two-dimensional lateral superlattices
In: Physical Review B : Condensed matter and materials physics, Vol. 44 (1991), No. 7, pp. 3447 - 3450
1990article/chapter in journal
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Lorke, Axel; Merkt, U.; Malcher, F.; Weimann, G.; Schlapp, W.:
Subband spectroscopy of single and coupled GaAs quantum wells
In: Physical Review B : Condensed matter and materials physics, Vol. 42 (1990), No. 2, 13-21-1325
1990book article/chapter in collection
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Kotthaus, Jörg P.; Lorke, Axel; Alsmeier, J.; Merkt, U.; Kuchar, Friedemar; Heinrich, H.; Bauer, G.:
Field-effect confined electron dots
In: Localization and confinement of electrons in semiconductors : proceedings of the 6. international winter school, Mauterndorf, Austria, February 19 - 23, 1990 / Kuchar, Friedemar (Eds.). - Berlin [u.a.]: Springer, 1990 - (Springer series in solid state sciences ; 97), pp. 29 - 38
1990article/chapter in journal
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Lorke, Axel; Kotthaus, Jörg P.; Ploog, Klaus:
Coupling of quantum dots on GaAs
In: Physical Review Letters, Vol. 64 (1990), No. 21, pp. 2559 - 2562
1989article/chapter in journal
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Lorke, Axel; Wieck, Andreas D.; Merkt, U.; Weimann, G.; Schlapp, W.:
Far-infrared spectroscopy of electrons in coupled double quantum wells
In: Superlattices and Microstructures, Vol. 5 (1989), No. 2, pp. 279 - 282
1989article/chapter in journal
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Luyken, Richard J.; Lorke, Axel; Haslinger, M.; Miller, Barbara Therese; Fricke, M.; Kotthaus, Jörg P.; Medeiros-Ribeiro, Gilberto; Petroff, Pierre M.:
Electronic coupling effects in self-assembled InAs quantum dots
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 2 (1989), No. 1-4, pp. 704 - 708