- LSF ID
- 59828
- ORCID
- 0000-0002-9899-2700
- Sonstiges
- der Hochschule zugeordnete*r Autor*in
- GND
- 1029383219
- LSF ID
- 3560
- ORCID
- 0000-0002-1864-3261
- Sonstiges
- der Hochschule zugeordnete*r Autor*in
Abstract in Englisch:
Nonreciprocity of spin-wave propagation is a well-known consequence of antisymmetric exchange contributions in magnetic spin systems that lack inversion symmetry. In this case, the energy of a state depends on the sign of its momentum as ħω(k)≠ħω(−k). We discuss here the consequences of this nonreciprocity on counterpropagating traveling spin-wave states. In a confined geometry we find states with well-defined nodes which are inherently phase modulated such that space-inversion symmetry of the mode profile is lost. This entails that additional spectral features become visible in ferromagnetic resonance studies of microelements with Dzyaloshinskii-Moriya interaction (DMI), allowing a quantification of the amplitude and direction of the DMI. Moreover, this interference between nonreciprocal modes forms the basis for a generalized concept of mode confinement.