1. Tunability versus deviation sensitivity in a nonlinear vortex oscillator.
- Author
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Martin, S. Y., Thirion, C., Hoarau, C., Baraduc, C., and Diény, B.
- Subjects
- *
NONLINEAR oscillators , *DEVIATION (Statistics) , *AUDIO-frequency oscillators , *SPIN transfer torque , *QUANTUM states - Abstract
Frequency modulation experiments were performed on a spin torque vortex oscillator for a wide range of modulation frequencies, up to 10% of the oscillator frequency. A thorough analysis of the intermodulation products shows that the key parameter that describes these experiments is the deviation sensitivity, which is the dynamical frequency-current dependence. It differs significantly from the oscillator tunability discussed so far in the context of spin-transfer oscillators. The essential difference between these two concepts is related to the response time of the vortex oscillator, driven either in quasisteady state or in a transient regime. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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