Current-induced spin torque resonance of magnetic insulators affected by field-like spin-orbit torques and out-of-plane magnetizations
arXiv:1409.8406 · doi:10.1063/1.4913632
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.
arXiv comment4 pages, 2 figures
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- Insulating nanomagnets driven by spin torque
- Excitation and detection of short-waved spin waves in ultrathin Ta/CoFeB/MgO-layer system suitable for spin-orbit-torque magnonics
- Current-Induced Magnetization Control in Insulating Ferrimagnetic Garnets
- Thickness dependence study of current-driven ferromagnetic resonance in Y3Fe5O12/heavy metal bilayers
- Anatomy of electrical signals and dc-voltage lineshape in spin torque ferromagnetic resonance
- New pathways towards efficient metallic spin Hall spintronics
- Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers
- Spin-circuit representation of spin-torque ferromagnetic resonance
- Leveraging symmetry for an accurate spin-orbit torques characterization in ferrimagnetic insulators
- Theory of nonlinear magnetoelectric transport effects in normal-metal magnetic-insulator heterostructures