Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations

Abstract

The spin-torque ferromagnetic resonance (ST-FMR) in a bilayer system consisting of a magnetic insulator such as Y3Fe5O12 and a normal metal with spin-orbit interaction such as Pt is addressed theoretically. We model the ST-FMR for all magnetization directions and in the presence of field-like spin-orbit torques based on the drift-diffusion spin model and quantum mechanical boundary conditions. ST-FMR experiments may expose crucial information about the spin-orbit coupling between currents and magnetization in the bilayers.

4 pages, 2 figures

References in corpus (4)

• Spin Seebeck insulator
• Theory of spin Hall magnetoresistance
• Current-induced spin torque resonance of magnetic insulators
• Intrinsic magnetoresistance in metal films on ferromagnetic insulators

Cited by in corpus (4)

• Insulating nanomagnets driven by spin torque
• Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers
• Leveraging symmetry for an accurate spin-orbit torques characterization in ferrimagnetic insulators
• Theory of nonlinear magnetoelectric transport effects in normal-metal $-$ magnetic-insulator heterostructures