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Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque (1412.1532v1)
Published 4 Dec 2014 in cond-mat.mes-hall
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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