Spin diffusion in doped semiconductors: the role of Coulomb interactions
Strongly Correlated Electrons
2009-10-31 v4
Abstract
We examine the effect of the Coulomb interaction on the mobility and diffusion of spin packets in doped semiconductors. We find that the diffusion constant is reduced, relative to its non-interacting value, by the combined effect of Coulomb-enhanced spin susceptibility and spin Coulomb drag. In ferromagnetic semiconductors, the spin diffusion constant vanishes at the ferromagnetic transition temperature.
Keywords
Cite
@article{arxiv.cond-mat/0007197,
title = {Spin diffusion in doped semiconductors: the role of Coulomb interactions},
author = {Irene D'Amico and Giovanni Vignale},
journal= {arXiv preprint arXiv:cond-mat/0007197},
year = {2009}
}
Comments
Changes in figures; accepted for publication by Europhysics Letters