Spin-polarized transport in a lateral two-dimensional diluted magnetic semiconductor electron gas
Mesoscale and Nanoscale Physics
2007-05-23 v1
Abstract
The transport property of a lateral two-dimensional diluted magnetic semiconductor electron gas under a spatially periodic magnetic field is investigated theoretically. We find that the electron Fermi velocity along the modulation direction is highly spin-dependent even if the spin polarization of the carrier population is negligibly small. It turns out that this spin-polarized Fermi velocity alone can lead to a strong spin polarization of the current, which is still robust against the energy broadening effect induced by the impurity scattering.
Keywords
Cite
@article{arxiv.cond-mat/0509591,
title = {Spin-polarized transport in a lateral two-dimensional diluted magnetic semiconductor electron gas},
author = {W. Yang and Kai Chang and X. G. Wu and H. Z. Zheng},
journal= {arXiv preprint arXiv:cond-mat/0509591},
year = {2007}
}
Comments
3 pages, 3 figures, submitted to Appl. Phys. Lett