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Spin torque, tunnel-current spin polarization and magnetoresistance in MgO magnetic tunnel junctions
G. D. Fuchs, J. A. Katine, S. I. Kiselev +4
We examine the spin torque (ST) response of magnetic tunnel junctions (MTJs) with ultra-thin MgO tunnel barrier layers to investigate the relationship between the spin-transfer tor…
Mechanisms limiting the coherence time of spontaneous magnetic oscillations driven by DC spin-polarized currents
J. C. Sankey, I. N. Krivorotov, S. I. Kiselev +4
The spin-transfer torque from a DC spin-polarized current can generate highly-coherent magnetic precession in nanoscale magnetic-multilayer devices. By measuring linewidths of spec…
Spin-Transfer Excitations of Permalloy Nanopillars for Large Applied Currents
S. I. Kiselev, J. C. Sankey, I. N. Krivorotov +4
Using measurements of the spectra of microwave-frequency resistance oscillations, we determine the phase diagram of magnetic excitations caused by torques from DC spin-polarized cu…