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arXiv · 1007.5037

Current-induced torques in the presence of spin-orbit coupling

Paul M. Haney·M. D. Stiles
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Abstract

In systems with strong spin-orbit coupling, the relationship between spin-transfer torque and the divergence of the spin current is generalized to a relation between spin transfer torques, total angular momentum current, and mechanical torques. In ferromagnetic semiconductors, where the spin-orbit coupling is large, these considerations modify the behavior of the spin transfer torques. One example is a persistent spin transfer torque in a spin valve: the spin transfer torque does not decay away from the interface, but approaches a constant value. A second example is a mechanical torque at single ferromagnetic-nonmagnetic interface.

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Paul M. Haney, M. D. Stiles. 2010-07-28. Current-induced torques in the presence of spin-orbit coupling. https://doi.org/10.1103/physrevlett.105.126602

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