Topological Orbital Angular Momentum Hall Current
介观与纳米尺度物理
2007-05-23 v2 材料科学
摘要
We show that there is a fundamental difference between spin Hall current and orbital angular momentum Hall current in Rashba- Dresselhaus spin orbit coupling systems. The orbital angular momentum Hall current has a pure topological contribution which is originated from the existence of magnetic flux in momentum space while there is no such topological nature for the spin Hall current. Moreover, we show that the orbital Hall conductance is always larger than the spin Hall conductance in the presence of both couplings. The topological part is expected to be free from the effect of disorder due to the topological nature. Therefore, the orbital angular momentum Hall current should be the major effect in real experiments.
关键词
引用
@article{arxiv.cond-mat/0503149,
title = {Topological Orbital Angular Momentum Hall Current},
author = {Jiangping Hu},
journal= {arXiv preprint arXiv:cond-mat/0503149},
year = {2007}
}
备注
4 pages, 1 figure