Anomalous Hall effect in a two dimensional electron gas with magnetic impurities
Materials Science
2009-11-13 v1
Abstract
Magnetic impurities play an important role in many spintronics-related materials. Motivated by this fact, we study the anomalous Hall effect in the presence of magnetic impurities, focusing on two-dimensional electron systems with Rashba spin-orbit coupling. We find a highly nonlinear dependence on the impurity polarization, including possible sign changes. At small impurity magnetizations, this is a consequence of the remarkable result that the linear term is independent of the spin-orbit coupling strength. Near saturation of the impurity spins, the anomalous Hall conductivity can be resonantly enhanced, due to interference between potential and magnetic scattering.
Cite
@article{arxiv.0711.3415,
title = {Anomalous Hall effect in a two dimensional electron gas with magnetic impurities},
author = {Tamara S. Nunner and Gergely Zarand and Felix von Oppen},
journal= {arXiv preprint arXiv:0711.3415},
year = {2009}
}
Comments
5 pages, 3 figures