Domain-wall-controlled transverse spin injection
Mesoscale and Nanoscale Physics
2013-08-28 v1
Abstract
We propose an effect whereby an electric current along the interface between a ferromagnetic and normal metal leads to injection of pure spin current into the normal metal, if the magnetization-direction in the ferromagnet varies along the direction of current. For the specific example of a ferromagnetic domain wall, we compute the inverse spin-Hall effect voltage this spin current gives rise to when injected into a Pt layer. Furthermore, we show that this pure spin current leads to modification of the parameters that govern spin transfer and current-driven domain-wall motion, which can be use to optimize the latter in layered magnetic systems. This effect in principle enables control over the location of spin-current injection in devices.
Cite
@article{arxiv.1212.5435,
title = {Domain-wall-controlled transverse spin injection},
author = {E. van der Bijl and R. E. Troncoso and R. A. Duine},
journal= {arXiv preprint arXiv:1212.5435},
year = {2013}
}