Current-driven vortex oscillations in metallic nanocontacts

Abstract

We present experimental evidence of sub-GHz spin-transfer oscillations in metallic nano-contacts that are due to the translational motion of a magnetic vortex. The vortex is shown to execute large-amplitude orbital motion outside the contact region. Good agreement with analytical theory and micromagnetics simulations is found.

4 pages, 3 figures

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• Temperature dependence of microwave voltage emission associated to spin-transfer induced vortex oscillation in magnetic tunnel junction
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• Spin-Transfer Torque Induced Vortex Dynamics in Fe/Ag/Fe Nanopillars
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• Impact of intra-grain spin wave reflections on nano-contact spin torque oscillators
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• Transient dynamics of strongly coupled spin vortex pairs: effects of anharmonicity and resonant excitation on inertial switching
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• Nanocontact vortex oscillators based on Co${}_2$MnGe pseudo-spin valves
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