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  • Title: Spin current and polarization in impure two-dimensional electron systems with spin-orbit coupling.
    Author: Mishchenko EG, Shytov AV, Halperin BI.
    Journal: Phys Rev Lett; 2004 Nov 26; 93(22):226602. PubMed ID: 15601109.
    Abstract:
    We derive the transport equations for two-dimensional electron systems with Rashba spin-orbit interaction and short-range spin-independent disorder. In the limit of slow spatial variations, we obtain coupled diffusion equations for the electron density and spin. Using these equations we calculate electric-field induced spin accumulation and spin current in a finite-size sample for an arbitrary ratio between spin-orbit energy splitting Delta and elastic scattering rate tau(-1). We demonstrate that the spin-Hall conductivity vanishes in an infinite system independent of this ratio.
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