Tuesday, July 30, 2013

1307.7427 (Tomohiro Taniguchi et al.)

Theoretical Study of Spin-Torque Oscillator with Perpendicularly
Magnetized Free Layer

Tomohiro Taniguchi, Hiroko Arai, Hitoshi Kubota, Hiroshi Imamura
The magnetization dynamics 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 equation. We derived the analytical formula of the relation between the current and the oscillation frequency of the STO by analyzing the energy balance between the work done by the spin torque and the energy dissipation due to the damping. We also found that the field-like torque breaks the energy balance, and change the oscillation frequency.
View original: http://arxiv.org/abs/1307.7427

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