Spin current and polarization in impure 2D electron systems with spin-orbit coupling
介观与纳米尺度物理
2007-05-23 v2
摘要
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.
引用
@article{arxiv.cond-mat/0406730,
title = {Spin current and polarization in impure 2D electron systems with spin-orbit coupling},
author = {E. G. Mishchenko and A. V. Shytov and B. I. Halperin},
journal= {arXiv preprint arXiv:cond-mat/0406730},
year = {2007}
}
备注
5 pages, 1 figure; revised version according to referee's commments