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Spin–orbit torque switching in a T-type magnetic configuration with current orthogonal to easy axes

Author

Listed:
  • W. J. Kong

    (Institute of Physics, Chinese Academy of Sciences)

  • C. H. Wan

    (Institute of Physics, Chinese Academy of Sciences)

  • X. Wang

    (Institute of Physics, Chinese Academy of Sciences)

  • B. S. Tao

    (Institute of Physics, Chinese Academy of Sciences)

  • L. Huang

    (Institute of Physics, Chinese Academy of Sciences)

  • C. Fang

    (Institute of Physics, Chinese Academy of Sciences)

  • C. Y. Guo

    (Institute of Physics, Chinese Academy of Sciences)

  • Y. Guang

    (Institute of Physics, Chinese Academy of Sciences)

  • M. Irfan

    (Institute of Physics, Chinese Academy of Sciences)

  • X. F. Han

    (Institute of Physics, Chinese Academy of Sciences
    University of Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

Abstract

Different symmetry breaking ways determine various magnetization switching modes driven by spin–orbit torques (SOT). For instance, an applied or effective field parallel to applied current is indispensable to switch magnetization with perpendicular anisotropy by SOT. Besides of this mode, here we experimentally demonstrate a distinct field-free switching mode in a T-type magnetic system with structure of MgO/CoFeB/Ta/CoFeB/MgO where a perpendicular layer with tilted easy axis was coupled to an in-plane layer with a uniaxial easy axis. Current was applied orthogonal to both easy axes and thus also normal to an in-plane effective field experienced by the perpendicular layer. Dynamic calculation shows perpendicular layer could be switched at the same time as the in-plane layer is switched. These field-free switching modes realized in the same T-type magnetic system might expedite the birth of multi-state spin memories or spin logic devices which could be operated by all electric manners.

Suggested Citation

  • W. J. Kong & C. H. Wan & X. Wang & B. S. Tao & L. Huang & C. Fang & C. Y. Guo & Y. Guang & M. Irfan & X. F. Han, 2019. "Spin–orbit torque switching in a T-type magnetic configuration with current orthogonal to easy axes," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-018-08181-y
    DOI: 10.1038/s41467-018-08181-y
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