Fluctuation-dissipation considerations and damping models for ferromagnetic materials

被引：19
|
作者：
Safonov, VL [1 ]
Bertram, HN [1 ]
机构：
[1] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.71.224402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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, which was proven for Hamiltonian systems, can give an inconsistent result for magnetic systems with dissipation.
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页数：5
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