Proper dissipative torques in antiferromagnetic dynamics

  title={Proper dissipative torques in antiferromagnetic dynamics},
  author={H. Y. Yuan and Qian Liu and Ke Xia and Zhe Yuan and X. Renshaw Wang},
  journal={EPL (Europhysics Letters)},
There is little doubt that the magnetization dynamics of ferromagnetic systems is governed by the Landau-Lifshitz-Gilbert equation or its generalization with various spin torques. In contrast, there are several sets of dynamic equations for two-sublattice antiferromagnets (AFMs) in literature that have different forms of dissipative torques and no proper dynamic equations for multi-sublattice AFMs and ferrimagnets in general. Here we introduce the general Rayleigh dissipation functional into… Expand

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