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Nonexistence of intrinsic spin currents

Alexander Khaetskii
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Abstract

We have described the electron spin dynamics in the presence of the spin-orbit interaction and disorder using the spin-density matrix method. We showed that in the Born approximation in the scattering amplitude the spin current is zero for an arbitrary ratio of the spin-orbit splitting and the scattering rate. Various types of the disorder potential are studied. We argue that the bulk spin current has always an {\it extrinsic} nature and depends explicitely on scattering by impurities since it appears only beyond the Born approximation in the scattering amplitude.

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Alexander Khaetskii. 2004-08-06. Nonexistence of intrinsic spin currents. https://doi.org/10.1103/physrevlett.96.056602

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