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


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