Abstract
For a perpendicular magnetized free layer, a phase-locking steady-state precession is synchronized with the injected circularly polarized spin current. Responses of the spin-wave dynamics with the injected spin-torque are calculated from the Landau-Lifshitz-Gilbert equation in a rotating coordinate frame. Two dynamical precessional modes are found below an upper frequency limit and can be reversibly tuned by the injected current. It is also noted that the perpendicular magnetization will reverse with a circularly spin-polarized current according to the right-hand rule.
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