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cond-mat.mtrl-sci2008★ 18 cited
Auto-oscillation threshold and line narrowing in MgO-based spin-torque oscillators
S. Cornelissen, L. Bianchini, G. Hrkac +7
We present an experimental study of the power spectrum of current-driven magnetization oscillations in MgO tunnel junctions under low bias. We find the existence of narrow spectral…
cond-mat.mtrl-sci2007★ 9 cited
Mutual phase-locking in high frequency microwave nanooscillators as function of field angle
G. Hrkac, T. Schrefl, S. Bance +4
We perform a qualitative analysis of phase locking in a double point-contact spinvalve system by solving the Landau-Lifshitz-Gilbert-Slonzewski equation using a hybrid-finite-eleme…
cond-mat.mtrl-sci2007★ 233 cited
Current-driven vortex oscillations in metallic nanocontacts
Q. Mistral, M. van Kampen, G. Hrkac +6
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…