Role of Magnetic Field in Self-Oscillation of Nanomagnet Excited by Spin Torque
arXiv:1412.1532 · doi:10.1109/TMAG.2014.2326186
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.
4 pages, 3 figures, conference proceeding of Intermag 2014
References in corpus (4)
- Bias-driven large power microwave emission from MgO-based tunnel magnetoresistance devices
- Current-driven vortex oscillations in metallic nanocontacts
- Time-Domain Studies of Very-Large-Angle Magnetization Dynamics Excited by Spin Transfer Torques
- Maximizing Spin Torque Diode Voltage by Optimizing Magnetization Alignment