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arXiv · 1612.09405

Derivation of Spin Torques of the Magnetic System in Broken Inversion Symmetry

H. Y. Kwon·S. P. Kang·N. J. Kim·C. K. Lee·C. Won
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Abstract

We propose a new approach to derive spin torque in systems of broken inversion symmetry. It uses the concepts of asymmetric and directional spin-spin interactions to obtain their effective fields. We applied the effective fields into the Landau-Lifshitz equation and obtained spin torques. The model offers a new and general approach for spin dynamics, one that effectively merges the Dzyaloshinskii-Moriya interaction, spin transfer torques, and spin-orbit torque into the spin dynamics equation. We discussed how our model is imposed on the spin dynamics and compared our approach with the traditional discussions on spin dynamics.

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H. Y. Kwon, S. P. Kang, N. J. Kim, C. K. Lee, C. Won. 2016-12-30. Derivation of Spin Torques of the Magnetic System in Broken Inversion Symmetry. https://arxiv.org/abs/1612.09405

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