In this paper we numerically conduct micromagnetic modelling with an expended micromagnetic model that includes the spin torque term and an impedance model to investigate methods to replace external field sources with internal ones and to investigate its tuneability on nanopillar geometries. We present results for three methods: interlayer coupling, large perpendicular anisotropy and magnetostatic coupling. The internal field sources are evaluated as function of frequency shift with current, its dependency on temperature and are tested against analytical predictions.
@article{arxiv.0809.4973,
title = {Internal effective field sources for spin torque nano pillar oscillators},
author = {Gino Hrkac and Thomas Schrefl and Julian Dean and Alexander Goncharov and Simon Bance and Dieter Suess and Josef Fidler},
journal= {arXiv preprint arXiv:0809.4973},
year = {2009}
}
Comments
27 pages, 11 figures, submitted to Journal of Applied Physics