Gilbert and Landau-Lifshitz damping in the presense of spin-torque

Neil Smith

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arXiv · 0706.1736

Gilbert and Landau-Lifshitz damping in the presense of spin-torque

Neil Smith

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Abstract

A recent article by Stiles et al. (cond-mat/0702020) argued in favor of the Landau-Lifshitz damping term in the micromagnetic equations of motion over that of the more commonly accepted Gilbert damping form. Much of their argument revolved around spin-torque driven domain wall motion in narrow magnetic wires, since the presence of spin-torques can more acutely draw a distinction between the two forms of damping. In this article, the author uses simple arguments and examples to offer an alternative point of view favoring Gilbert.

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Neil Smith. 2007-06-12. Gilbert and Landau-Lifshitz damping in the presense of spin-torque. https://arxiv.org/abs/0706.1736

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