Pumping spin with electrical fields
介观与纳米尺度物理
2009-11-07 v2
摘要
Spin currents can be obtained through adiabatic pumping by means of electrical gating only. This is possible by making use of the tunability of the Rashba spin-orbit coupling in semiconductor heterostructures. We demonstrate the principles of this effect by considering a single-channel wire with a constriction. We also consider realistic structures, consisting of several open channels where subband spin-mixing and disorder are present, and we confirm our predictions. Two different ways to detect the spin-pumping effect, either using ferromagnetic leads or applying a magnetic field, are discussed.
引用
@article{arxiv.cond-mat/0211211,
title = {Pumping spin with electrical fields},
author = {M. Governale and F. Taddei and Rosario Fazio},
journal= {arXiv preprint arXiv:cond-mat/0211211},
year = {2009}
}
备注
5 pages, 2 figures; minor changes, typos corrected