Planar approximation for the frequencies of spin transfer oscillators

Abstract

A large class of spin transfer oscillators use the free layer with a strong easy plane anisotropy, which forces its magnetization to move close to the plane. We show that in this situation the effective planar approximation provides a fast and accurate way of calculating the oscillator frequency.

8 pages

References in corpus (8)

• Generation linewidth of an auto-oscillator with a nonlinear frequency shift: Spin-torque nano-oscillator
• Shaped angular dependence of the spin transfer torque and microwave generation without magnetic field
• Mechanisms limiting the coherence time of spontaneous magnetic oscillations driven by DC spin-polarized currents
• Lineshape distortion in a nonlinear auto-oscillator near generation threshold: Application to spin-torque nano-oscillators
• Temperature dependence of nonlinear auto-oscillator linewidths: Application to spin-torque nano-oscillators
• Generation of microwave radiation in planar spin-transfer devices
• Dynamics of thin-film spin-flip transistors with perpendicular source-drain magnetizations
• Effective attraction induced by repulsive interaction in a spin-transfer system

Cited by in corpus (5)

• Instability analysis of spin torque oscillator with an in-plane magnetized free layer and a perpendicularly magnetized pinned layer
• Magnetization switching by current and microwaves
• Dynamic coupling of ferromagnets via spin Hall magnetoresistance
• Planar approximation for spin transfer systems with application to tilted polarizer devices
• Uniform magnetization dynamics of a submicron ferromagnetic coin driven by the spin-orbit coupled spin torque