Ferromagnetic relaxation by magnon-induced currents

Details Ferromagnetic relaxation by magnon-induced currents Ferromagnetic relaxation by magnon-induced currents

2006-06-07

arxiv.org/abs/cond-mat/0606197v1

Phys. Rev. B 73, 172414 (2006)

Physics

Condensed Matter

Other Condensed Matter

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.73.172414

A theory for calculating spin wave relaxation times based on the magnon-electron interaction is developed. The theory incorporates a thin film geometry and is valid for a large range of magnon frequencies and wave vectors. For high conductivity metals such as permalloy, the wave vector dependent damping constant approaches values as high as 0.2, showing the large magnitude of the effect, and can dominate experimentally observed relaxation.

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