Coupled spin-charge drift-diffusion equations for the Rashba model subject to an in-plane electric field

Abstract

Coupled spin-charge drift-diffusion equations are derived for a biased two-dimensional electron gas with weak Rashba spin-orbit interaction. The basic equations formally agree with recent results obtained for spin-orbit coupled small polarons. It is shown that effects of an in-plane electric field on a homogeneous spin system can completely be described by an associated in-plane magnetic field. Exploiting this analogy, we predict among other things the electric-field equivalent of the Hanle effect. 72.15.Gd

Spin dynamics in semiconductors

“…The results reviewed in this section are focused on the spatially nonuniform system. There are several related works based on the linear response theory [35,1077] and kinetic theory 93 [1078][1079][1080][1081][1082][1083][1084][1085], whose results will also be briefly addressed. 93 Equations of this theory are the same as the kinetic spin Bloch equations but without the electron-electron Coulomb interaction.…”

Spin dynamics in semiconductors

“…The results reviewed in this section are focused on the spacial nonuniform system. There are several related researches based on the linear response theory [35,1078] and kinetic theory 93 [1079][1080][1081][1082][1083][1084][1085][1086], whose results will also be briefly addressed.…”