Spin magnetotransport in two-dimensional hole systems
Mesoscale and Nanoscale Physics
2007-06-19 v1
Abstract
Spin current of two-dimensional holes occupying the ground-state subband in an asymmetric quantum well and interacting with static disorder potential is calculated in the presence of a weak magnetic field H perpendicular to the well plane. Both spin-orbit coupling and Zeeman coupling are taken into account. It is shown that the applied electric field excites both the transverse (spin-Hall) and diagonal spin currents, the latter changes its sign at a finite H and becomes greater than the spin-Hall current as H increases. The effective spin-Hall conductivity introduced to describe the spin response in Hall bars is considerably enhanced by the magnetic field in the case of weak disorder and demonstrates a non-monotonic dependence on H.
Cite
@article{arxiv.0706.2468,
title = {Spin magnetotransport in two-dimensional hole systems},
author = {O. E. Raichev},
journal= {arXiv preprint arXiv:0706.2468},
year = {2007}
}