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arXiv · 1310.6791

Mode coupling in spin torque oscillators

Olle Heinonen·Yan Zhou·Dong Li
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Abstract

A number of recent experimental works have shown that the dynamics of a single spin torque oscillator can exhibit complex behavior that stems from interactions between two or more modes of the oscillator. Examples are observed mode-hopping or mode coexistence. There has been some intial work indicating how the theory for a single-mode (macro-spin) spin torque oscillator should be generalized to include several modes and the interactions between them. In the present work, we derive such a theory starting with the Landau-Lifshitz-Gilbert equation for magnetization dynamics. We compare our results with the single-mode theory, and show how it is a natural extension of that theory to include mode interactions.

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Olle Heinonen, Yan Zhou, Dong Li. 2013-11-29. Mode coupling in spin torque oscillators. https://arxiv.org/abs/1310.6791

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