Current-Induced Instability of a Perpendicular Ferromagnet in Spin Hall Geometry
Mesoscale and Nanoscale Physics
2016-06-27 v1 Materials Science
Abstract
We develop a theoretical formula of spin Hall torque in the presence of two ferromagnets. While the direction of the conventional spin Hall torque always points to the in-plane direction, the present system enables to manipulate the torque direction acting on one magnetization by changing the direction of another magnetization. Based on the diffusion equation of the spin accumulation and the Landauer formula, we derive analytical formula of the spin Hall torque. The present model provides a solution to switch a perpendicular ferromagnet deterministically at zero field using the spin Hall effect.
Keywords
Cite
@article{arxiv.1606.07540,
title = {Current-Induced Instability of a Perpendicular Ferromagnet in Spin Hall Geometry},
author = {Tomohiro Taniguchi and Seiji Mitani and Masamitsu Hayashi},
journal= {arXiv preprint arXiv:1606.07540},
year = {2016}
}
Comments
5 pages, 2 figures, conference proceeding of Joing MMM/Intermag conference 2016