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arXiv · 1412.1532

Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque

Tomohiro Taniguchi·Shingo Tamaru·Hiroko Arai·Sumito Tsunegi·Hitoshi Kubota·Hiroshi Imamura
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Abstract

The critical current of the self-oscillation of spin torque oscillator (STO) consisting of a perpendicularly magnetized free layer and an in-plane magnetized pinned layer was studied by solving the Landau-Lifshitz-Gilbert (LLG) equation. We found that the critical current diverged at certain field directions, indicating that the self-oscillation does not occur at these directions. It was also found that the sign of the critical current changed depending on the applied field direction.

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Tomohiro Taniguchi, Shingo Tamaru, Hiroko Arai, Sumito Tsunegi, Hitoshi Kubota, Hiroshi Imamura. 2014-12-04. Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque. https://doi.org/10.1109/tmag.2014.2326186

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