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Spin current and polarization in impure 2D electron systems with spin-orbit coupling

E. G. Mishchenko·A. V. Shytov·B. I. Halperin
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Abstract

We derive the transport equations for two-dimensional electron systems with spin-orbit interaction and short-range spin-independent disorder. In the limit of slow spatial variations of the electron distribution we obtain coupled diffusion equations for the electron density and spin. Using these equations we calculate electric-field induced spin accumulation in a finite-size sample for arbitrary ratio between spin-orbit energy splitting and elastic scattering rate. We demonstrate that the spin-Hall conductivity vanishes in an infinite system independent of this ratio.

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E. G. Mishchenko, A. V. Shytov, B. I. Halperin. 2004-10-12. Spin current and polarization in impure 2D electron systems with spin-orbit coupling. https://doi.org/10.1103/physrevlett.93.226602

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