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Phase locking of vortex based spin transfer oscillators to a microwave current
A. Dussaux, A. V. Khvalkovskiy, J. Grollier +8
Phase locking experiments on vortex based spin transfer oscillators with an external microwave current are performed. We present clear evidence of phase locking, frequency pulling,…
Dynamics of two coupled vortices in a spin valve nanopillar excited by spin transfer torque
N. Locatelli, V. V. Naletov, J. Grollier +7
We investigate the dynamics of two coupled vortices driven by spin transfer. We are able to independently control with current and perpendicular field, and to detect, the respectiv…
Non-uniformity of a planar polarizer as a reason of spin-transfer induced vortex oscillations at zero field
A. V. Khvalkovskiy, J. Grollier, N. Locatelli +3
We discuss a possible mechanism of the spin-transfer induced oscillations of a vortex in the free layer of spin-valve nanostructures, in which the polarizer layer has a planar magn…
Large microwave generation from d.c. driven magnetic vortex oscillators in magnetic tunnel junctions
A. Dussaux, B. Georges, J. Grollier +10
Spin polarized current can excite the magnetization of a ferromagnet through the transfer of spin angular momentum to the local spin system. This pure spin-related transport phenom…