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Large microwave generation from current-driven magnetic vortex oscillators in magnetic tunnel junctions

Author

Listed:
  • A. Dussaux

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11)

  • B. Georges

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11)

  • J. Grollier

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11)

  • V. Cros

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11)

  • A.V. Khvalkovskiy

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11
    A.M. Prokhorov General Physics Institute of RAS)

  • A. Fukushima

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • M. Konoto

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • H. Kubota

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • K. Yakushiji

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • S. Yuasa

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • K.A. Zvezdin

    (A.M. Prokhorov General Physics Institute of RAS
    Istituto P.M. s.r.l.)

  • K. Ando

    (National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan.)

  • A. Fert

    (Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11)

Abstract

Spin-polarized current can excite the magnetization of a ferromagnet through the transfer of spin angular momentum to the local spin system. This pure spin-related transport phenomenon leads to alluring possibilities for the achievement of a nanometer scale, complementary metal oxide semiconductor-compatible, tunable microwave generator that operates at low bias for future wireless communication applications. Microwave emission generated by the persistent motion of magnetic vortices induced by a spin-transfer effect seems to be a unique manner to reach appropriate spectral linewidth. However, in metallic systems, in which such vortex oscillations have been observed, the resulting microwave power is much too small. In this study, we present experimental evidence of spin-transfer-induced vortex precession in MgO-based magnetic tunnel junctions, with an emitted power that is at least one order of magnitude stronger and with similar spectral quality. More importantly and in contrast to other spin-transfer excitations, the thorough comparison between experimental results and analytical predictions provides a clear textbook illustration of the mechanism of spin-transfer-induced vortex precession.

Suggested Citation

  • A. Dussaux & B. Georges & J. Grollier & V. Cros & A.V. Khvalkovskiy & A. Fukushima & M. Konoto & H. Kubota & K. Yakushiji & S. Yuasa & K.A. Zvezdin & K. Ando & A. Fert, 2010. "Large microwave generation from current-driven magnetic vortex oscillators in magnetic tunnel junctions," Nature Communications, Nature, vol. 1(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:1:y:2010:i:1:d:10.1038_ncomms1006
    DOI: 10.1038/ncomms1006
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    Cited by:

    1. Guohua Bai & Jiayi Sun & Zhenhua Zhang & Xiaolian Liu & Sateesh Bandaru & Weiwei Liu & Zhong Li & Hongxia Li & Ningning Wang & Xuefeng Zhang, 2024. "Vortex-based soft magnetic composite with ultrastable permeability up to gigahertz frequencies," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Miguel Romera & Philippe Talatchian & Sumito Tsunegi & Kay Yakushiji & Akio Fukushima & Hitoshi Kubota & Shinji Yuasa & Vincent Cros & Paolo Bortolotti & Maxence Ernoult & Damien Querlioz & Julie Grol, 2022. "Binding events through the mutual synchronization of spintronic nano-neurons," Nature Communications, Nature, vol. 13(1), pages 1-7, December.

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