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Spin caloritronic nano-oscillator

Author

Listed:
  • C. Safranski

    (University of California)

  • I. Barsukov

    (University of California)

  • H. K. Lee

    (University of California)

  • T. Schneider

    (University of California
    Institute of Ion Beam Physics and Materials Research)

  • A. A. Jara

    (University of California)

  • A. Smith

    (University of California)

  • H. Chang

    (Colorado State University)

  • K. Lenz

    (Institute of Ion Beam Physics and Materials Research)

  • J. Lindner

    (Institute of Ion Beam Physics and Materials Research)

  • Y. Tserkovnyak

    (University of California)

  • M. Wu

    (Colorado State University)

  • I. N. Krivorotov

    (University of California)

Abstract

Energy loss due to ohmic heating is a major bottleneck limiting down-scaling and speed of nano-electronic devices, and harvesting ohmic heat for signal processing is a major challenge in modern electronics. Here, we demonstrate that thermal gradients arising from ohmic heating can be utilized for excitation of coherent auto-oscillations of magnetization and for generation of tunable microwave signals. The heat-driven dynamics is observed in Y3Fe5O12/Pt bilayer nanowires where ohmic heating of the Pt layer results in injection of pure spin current into the Y3Fe5O12 layer. This leads to excitation of auto-oscillations of the Y3Fe5O12 magnetization and generation of coherent microwave radiation. Our work paves the way towards spin caloritronic devices for microwave and magnonic applications.

Suggested Citation

  • C. Safranski & I. Barsukov & H. K. Lee & T. Schneider & A. A. Jara & A. Smith & H. Chang & K. Lenz & J. Lindner & Y. Tserkovnyak & M. Wu & I. N. Krivorotov, 2017. "Spin caloritronic nano-oscillator," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-00184-5
    DOI: 10.1038/s41467-017-00184-5
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    Cited by:

    1. B. Divinskiy & H. Merbouche & V. E. Demidov & K. O. Nikolaev & L. Soumah & D. Gouéré & R. Lebrun & V. Cros & Jamal Ben Youssef & P. Bortolotti & A. Anane & S. O. Demokritov, 2021. "Evidence for spin current driven Bose-Einstein condensation of magnons," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    2. Haowen Ren & Xin Yu Zheng & Sanyum Channa & Guanzhong Wu & Daisy A. O’Mahoney & Yuri Suzuki & Andrew D. Kent, 2023. "Hybrid spin Hall nano-oscillators based on ferromagnetic metal/ferrimagnetic insulator heterostructures," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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