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Hybrid spin Hall nano-oscillators based on ferromagnetic metal/ferrimagnetic insulator heterostructures

Author

Listed:
  • Haowen Ren

    (New York University)

  • Xin Yu Zheng

    (Stanford University)

  • Sanyum Channa

    (Stanford University)

  • Guanzhong Wu

    (New York University)

  • Daisy A. O’Mahoney

    (Stanford University)

  • Yuri Suzuki

    (Stanford University)

  • Andrew D. Kent

    (New York University)

Abstract

Spin-Hall nano-oscillators (SHNOs) are promising spintronic devices to realize current controlled GHz frequency signals in nanoscale devices for neuromorphic computing and creating Ising systems. However, traditional SHNOs devices based on transition metals have high auto-oscillation threshold currents as well as low quality factors and output powers. Here we demonstrate a new type of hybrid SHNO based on a permalloy (Py) ferromagnetic-metal nanowire and low-damping ferrimagnetic insulator, in the form of epitaxial lithium aluminum ferrite (LAFO) thin films. The superior characteristics of such SHNOs are associated with the excitation of larger spin-precession angles and volumes. We further find that the presence of the ferrimagnetic insulator enhances the auto-oscillation amplitude of spin-wave edge modes, consistent with our micromagnetic modeling. This hybrid SHNO expands spintronic applications, including providing new means of coupling multiple SHNOs for neuromorphic computing and advancing magnonics.

Suggested Citation

  • 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.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37028-4
    DOI: 10.1038/s41467-023-37028-4
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    References listed on IDEAS

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    Cited by:

    1. Xin Yu Zheng & Sanyum Channa & Lauren J. Riddiford & Jacob J. Wisser & Krishnamurthy Mahalingam & Cynthia T. Bowers & Michael E. McConney & Alpha T. N’Diaye & Arturas Vailionis & Egecan Cogulu & Haowe, 2023. "Ultra-thin lithium aluminate spinel ferrite films with perpendicular magnetic anisotropy and low damping," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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