Theory of the spin-torque-driven ferromagnetic resonance in a ferromagnet/normal-metal/ferromagnet structure

Abstract

We present a theoretical analysis of current driven ferromagnetic resonance in a ferromagnet/normal-metal/ferromagnet tri-layer. This method of driving ferromagnetic resonance was recently realized experimentally by Tulapurkar et al. [Nature 438, 339 (2005)] and Sankey et al. [Phys. Rev. Lett. 96, 227601 (2006)]. The precessing magnetization rectifies the alternating current applied to drive the ferromagnetic resonance and leads to the generation of a dc voltage. Our analysis shows that a second mechanism to generate a dc voltage, rectification of spin currents emitted by the precessing magnetization, has a contribution to the dc voltage that is of approximately equal size for the thin ferromagnetic films used in the experiment.

6 pages, 1 figure, final version. Changed title, updated references, added discussions in section II

References in corpus (2)

• Spin-transfer-driven ferromagnetic resonance of individual nanomagnets
• Non-collinear Magnetoelectronics

Cited by in corpus (8)

• Spin Transfer Torques
• Microwave photovoltage and photoresistance effects in ferromagnetic microstrips
• Magnetoresistance and spin-transfer torque in magnetic tunnel junctions
• Spin-Torque Ferromagnetic Resonance Measurements of Damping in Nanomagnets
• Scattering theory of adiabatic reaction forces due to out-of-equilibrium quantum environments
• Spin-torque driven ferromagnetic resonance in a nonlinear regime
• Charge pumping and the colored thermal voltage noise in spin valves
• Chirality and polarization of inertial antiferromagnetic resonances driven by spin-orbit torques