Internal effective field sources for spin torque nano pillar oscillators

Details Internal effective field sources for spin torque nano pillar oscillators Internal effective field sources for spin torque nano pillar oscillators

2008-09-29

arxiv.org/abs/0809.4973v1

Physics

Condensed Matter

Materials Science

27 pages, 11 figures, submitted to Journal of Applied Physics

Scientific paper

10.1063/1.3081646

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.

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