Enhancing the injection locking range of spin torque oscillators through mutual coupling

Abstract : We investigate how the ability of the vortex oscillation mode of a spin-torque nano-oscillator to lock to an external microwave signal is modified when it is coupled to another oscillator. We show experimentally that the mutual electrical coupling can lead to locking range enhancements of a factor 1.64. Furthermore, we analyze the evolution of the locking range as a function of the coupling strength through experiments and numerical simulations. By uncovering the mechanisms at stake in the locking range enhancement, our results will be useful for designing spin-torque nano-oscillator arrays with high sensitivities to external microwave stimuli
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01614037
Contributor : Laurent Vila <>
Submitted on : Tuesday, October 10, 2017 - 1:19:51 PM
Last modification on : Thursday, April 4, 2019 - 9:44:02 AM

Links full text

Identifiers

Collections

Citation

M. Romera, P. Talatchian, R. Lebrun, K.J. Merazzo, P. Bortolotti, et al.. Enhancing the injection locking range of spin torque oscillators through mutual coupling. Applied Physics Letters, American Institute of Physics, 2016, 109, pp.252404 ⟨10.1063/1.4972346⟩. ⟨hal-01614037⟩

Share

Metrics

Record views

151