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Suppression of telegraph noise in a CPP spin valve by an oscillating spin torque: Numerical study

A. Rebei
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Abstract

The phenomenon of stochastic resonance (SR) has been mainly studied in one-dimensional systems with additive noise. We show that in higher dimensional systems and in the presence of multiplicative noise, a non-linear magnetic system with a strongly periodic current can show behavior similar to that of SR but only for frequencies below the ferromagnetic resonance (FMR) frequency of the system. Such a phenomena can provide an effective way to suppress low frequency noise in spin valve magnetic sensors.

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A. Rebei. 2006-05-23. Suppression of telegraph noise in a CPP spin valve by an oscillating spin torque: Numerical study. https://arxiv.org/abs/cond-mat/0605585

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