Spin Hall effect of alloys: Extrinsic and intrinsic contribution
Abstract
A fully relativistic description of the spin-orbit induced spin Hall effect is presented that is based on Kubo's linear response formalism. Using an appropriate operator for the spin current density a Kubo-St\v{r}eda-like equation for the spin Hall conductivity (SHC) is obtained. An implementation using the Korringa-Kohn-Rostoker (KKR) band structure method in combination with the Coherent Potential Approximation (CPA) allow detailed investigations on various alloy systems. A decomposition of the SHC into intrinsic and extrinsic contributions is suggested. Accompanying calculations for the skew-scattering contribution of the SHC using the Boltzmann equation demonstrate the equivalence to the Kubo formalism in the dilute alloy regime and support the suggested decomposition scheme.
Keywords
Cite
@article{arxiv.1010.5520,
title = {Spin Hall effect of alloys: Extrinsic and intrinsic contribution},
author = {Stephan Lowitzer and Martin Gradhand and Diemo Ködderitzsch and Dmitry V. Fedorov and Ingrid Mertig and Hubert Ebert},
journal= {arXiv preprint arXiv:1010.5520},
year = {2010}
}