Spin-Orbit Torques in Two-Dimensional Rashba Ferromagnets
Materials Science
2015-07-14 v2 Disordered Systems and Neural Networks
Mesoscale and Nanoscale Physics
Abstract
Magnetization dynamics in single-domain ferromagnets can be triggered by charge current if spin-orbit coupling is sufficiently strong. We apply functional Keldysh theory to investigate Rashba spin-orbit torques in metallic two-dimensional ferromagnets. A reactive, anti-damping-like spin-orbit torque as well as a dissipative, field-like torque are calculated microscopically, to the leading order in the spin-orbit interaction strength. By calculating the first vertex correction we show that the intrinsic anti-damping-like torque vanishes unless the scattering rates are spin-dependent.
Cite
@article{arxiv.1503.06872,
title = {Spin-Orbit Torques in Two-Dimensional Rashba Ferromagnets},
author = {A. Qaiumzadeh and R. A. Duine and M. Titov},
journal= {arXiv preprint arXiv:1503.06872},
year = {2015}
}
Comments
4.5 pages, 1 figure