Nonexistence of intrinsic spin currents
Mesoscale and Nanoscale Physics
2015-06-24 v1 Disordered Systems and Neural Networks
Abstract
We have described the electron spin dynamics in the presence of the spin-orbit interaction and disorder using the spin-density matrix method. We showed that in the Born approximation in the scattering amplitude the spin current is zero for an arbitrary ratio of the spin-orbit splitting and the scattering rate. Various types of the disorder potential are studied. We argue that the bulk spin current has always an {\it extrinsic} nature and depends explicitely on scattering by impurities since it appears only beyond the Born approximation in the scattering amplitude.
Keywords
Cite
@article{arxiv.cond-mat/0408136,
title = {Nonexistence of intrinsic spin currents},
author = {Alexander Khaetskii},
journal= {arXiv preprint arXiv:cond-mat/0408136},
year = {2015}
}
Comments
5 pages, RevTex, 1 Fig