Current-induced macrospin vs spin-wave excitations in spin valves
arXiv:cond-mat/0501672 · doi:10.1103/PhysRevB.73.014408
Abstract
The mode dependence of current-induced magnetic excitations in spin valves is studied theoretically. The torque exerted on the magnetization by transverse spin currents as well as the Gilbert damping constant are found to depend strongly on the wave length of the excitation (spin wave). Analytic expressions are presented for the critical currents that excite a selected spin wave. The onset of macrospin (zero wavelength) vs finite wavelength instabilities depends on the device parameters and the current direction, in agreement with recent experimental findings.
8 pages, 3 figures
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Cited by in corpus (15)
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- Spin-transfer in bilayer magnetic nanopillars at high fields as a function of free layer thickness
- Current-induced switching in single ferromagnetic layer nanopillar junctions
- Current induced transverse spin-wave instability in thin ferromagnets: beyond linear stability analysis
- Spintronics meets density matrix renormalization group: Quantum spin torque driven nonclassical magnetization reversal and dynamical buildup of long-range entanglement
- Focused-ion-beam milling based nanostencil mask fabrication for spin transfer torque studies
- Tunable magnetoresistance in spin-orbit coupled graphene junctions
- Spin-transfer-induced excitations in bilayer magnetic nanopillars at high fields: The effects of contact layers
- Periodic structure of spin-transfer current in ferromagnetic multilayers