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Synchronization of spin Hall nano-oscillators to external microwave signals

Author

Listed:
  • V. E. Demidov

    (University of Muenster)

  • H. Ulrichs

    (University of Muenster)

  • S. V. Gurevich

    (University of Muenster)

  • S. O. Demokritov

    (University of Muenster)

  • V. S. Tiberkevich

    (Oakland University)

  • A. N. Slavin

    (Oakland University)

  • A. Zholud

    (Emory University)

  • S. Urazhdin

    (Emory University)

Abstract

Recently, a novel type of spin-torque nano-oscillators driven by pure spin current generated via the spin Hall effect was demonstrated. Here we report the study of the effects of external microwave signals on these oscillators. Our results show that they can be efficiently synchronized by applying a microwave signal at approximately twice the frequency of the auto-oscillation, which opens additional possibilities for the development of novel spintronic devices. We find that the synchronization exhibits a threshold determined by magnetic fluctuations pumped above their thermal level by the spin current, and is significantly influenced by the nonlinear self-localized nature of the auto-oscillatory mode.

Suggested Citation

  • V. E. Demidov & H. Ulrichs & S. V. Gurevich & S. O. Demokritov & V. S. Tiberkevich & A. N. Slavin & A. Zholud & S. Urazhdin, 2014. "Synchronization of spin Hall nano-oscillators to external microwave signals," Nature Communications, Nature, vol. 5(1), pages 1-6, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4179
    DOI: 10.1038/ncomms4179
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    Cited by:

    1. Rouven Dreyer & Alexander F. Schäffer & Hans G. Bauer & Niklas Liebing & Jamal Berakdar & Georg Woltersdorf, 2022. "Imaging and phase-locking of non-linear spin waves," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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