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Fluctuation-dissipation considerations and damping models for ferromagnetic materials

Vladimir L. Safonov·H. Neal Bertram
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Abstract

The role of fluctuation-dissipation relations (theorems) for the magnetization dynamics with Landau-Lifshitz-Gilbert and Bloch-Bloembergen damping terms are discussed. We demonstrate that the use of the Callen-Welton fluctuation-dissipation theorem that was proven for Hamiltonian systems can give an inconsistent result for magnetic systems with dissipation.

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BibTeXRIS

Vladimir L. Safonov, H. Neal Bertram. 2005-05-10. Fluctuation-dissipation considerations and damping models for ferromagnetic materials. https://doi.org/10.1103/physrevb.71.224402

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