Eur. Phys. J. B 74, 357-362 (2010)
https://doi.org/10.1140/epjb/e2010-00099-0

Rashba coupling induced spin accumulation in two-dimensional domain wall

Department of Physics, Azarbaijan University of Tarbiat Moallem, 53714-161, Tabriz, Iran

Corresponding author: Phirouznia@azaruniv.edu

Received: 26 September 2009
Revised: 5 January 2010
Published online: 18 March 2010

Abstract

Non-equilibrium spin accumulation in two-dimensional domain wall (DW) in the presence of external electric field and Rashba type spin-orbit coupling within the Boltzmann semi-classical model is investigated. Transport and relaxation of spin polarized current in the DW is governed by spin-flip rates which are determined by the Rashba interaction and magnetic impurities. Numerical results show that at low impurity densities and nonadiabatic transport regimes, the Rashba interaction significantly enhances spin polarization of conduction electrons inside the DW.