Spin polarizations and spin Hall currents in a two-dimensional electron gas with magnetic impurities

Abstract

We consider a two-dimensional electron gas in the presence of Rashba spin-orbit coupling, and study the effects of magnetic $s$-wave and long-range nonmagnetic impurities on the spin-charge dynamics of the system. We focus on voltage induced spin polarizations and their relation to spin Hall currents. Our results are obtained using the quasiclassical Green function technique, and hold in the full range of the disorder parameter $\ensuremath{\alpha}{p}_{F}\ensuremath{\tau}$.