Linear Contribution to Spatial Dispersion in the Spin-Wave Spectrum of Ferromagnets
- 22 January 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 30 (4), 125-128
- https://doi.org/10.1103/physrevlett.30.125
Abstract
The implications of magnetic symmetry on the spin-wave spectrum of ferromagnets are examined. Contrary to the usual result, the spin-wave dispersion relation is found to contain a term linear in the wave vector for a definite set of magnetic symmetries. This linear dispersion is shown to be a consequence of antisymmetric exchange.Keywords
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