A three-dimensional spin-diffusion model for micromagnetics
Computational Physics
2015-05-19 v2 Mesoscale and Nanoscale Physics
Abstract
We implement a finite-element scheme that solves the Landau-Lifshitz-Gilbert equation coupled to a diffusion equation accounting for spin-polarized currents. The latter solves for the spin accumulation not only in magnetic materials but also in nonmagnetic conductors. The presented method incorporates the model by Slonczewski for the description of spin torque in magnetic multilayers as well as the model of Zhang and Li for the description of current driven domain-wall motion. Furthermore it is able to do both resolve the time evolution of the spin accumulation or treat it in an adiabatic fashion by the choice of sufficiently large time steps.
Cite
@article{arxiv.1410.6067,
title = {A three-dimensional spin-diffusion model for micromagnetics},
author = {Claas Abert and Michele Ruggeri and Florian Bruckner and Christoph Vogler and Gino Hrkac and Dirk Praetorius and Dieter Suess},
journal= {arXiv preprint arXiv:1410.6067},
year = {2015}
}