Synchronization of high power vortex oscillators at multiple of the fundamental frequency

Claire Baraduc; Sylvain Martin; Christophe Thirion; Yue Liu; Moris Dovek; Bernard Diény

doi:10.1117/12.895216

15 September 2011 Synchronization of high power vortex oscillators at multiple of the fundamental frequency

Claire Baraduc, Sylvain Martin, Christophe Thirion, Yue Liu, Moris Dovek, Bernard Diény

Proceedings Volume 8100, Spintronics IV; 810016 (2011) https://doi.org/10.1117/12.895216
Event: SPIE NanoScience + Engineering, 2011, San Diego, California, United States

Abstract

RF vortex spin-transfer oscillators based on low RA magnetic tunnel junctions were investigated. A very high power of excitations has been obtained characterized by a power spectral density containing a very sharp peak at the fundamental frequency and a series of harmonics. The observed behaviour is attributed to the combined effect of Oersted-Ampère field generated by the large applied dc-current and of the spin transfer torque. We furthermore show the synchronization of a vortex oscillation by applying a RF bias microwave which frequency is twice the oscillator fundamental frequency.

Citation Download Citation

Claire Baraduc, Sylvain Martin, Christophe Thirion, Yue Liu, Moris Dovek, and Bernard Diény "Synchronization of high power vortex oscillators at multiple of the fundamental frequency", Proc. SPIE 8100, Spintronics IV, 810016 (15 September 2011); https://doi.org/10.1117/12.895216

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