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Generation of out-of-plane polarized spin current by non-uniform oxygen octahedral tilt/rotation

Author

Listed:
  • Furong Han

    (Beihang University)

  • Jing Zhang

    (Dongguan)

  • Fan Yang

    (Beihang University)

  • Bo Li

    (Beihang University)

  • Yu He

    (Beihang University)

  • Guansong Li

    (Chinese Academy of Sciences)

  • Youxiang Chen

    (Beihang University)

  • Qisheng Jiang

    (Dongguan)

  • Yan Huang

    (Beihang University)

  • Hui Zhang

    (Beihang University)

  • Jine Zhang

    (Beihang University)

  • Huaiwen Yang

    (Beihang University)

  • Huiying Liu

    (Beihang University)

  • Qinghua Zhang

    (Chinese Academy of Sciences)

  • Hao Wu

    (Dongguan)

  • Jingsheng Chen

    (National University of Singapore)

  • Weisheng Zhao

    (Beihang University)

  • Xian-Lei Sheng

    (Beihang University)

  • Jirong Sun

    (Chinese Academy of Sciences
    Jinan University)

  • Yue Zhang

    (Beihang University)

Abstract

The free-field switching of the perpendicular magnetization by the out-of-plane polarized spin current induced spin-orbit torque makes it a promising technology for developing high-density memory and logic devices. The materials intrinsically with low symmetry are generally utilized to generate the spin current with out-of-plane spin polarization. However, the generation of the out-of-plane polarized spin current by engineering the symmetry of materials has not yet been reported. Here, we demonstrate that paramagnetic CaRuO3 films are able to generate out-of-plane polarized spin current by engineering the crystal symmetry. The non-uniform oxygen octahedral tilt/rotation along film’s normal direction induced by oxygen octahedral coupling near interface breaks the screw-axis and glide-plane symmetries, which gives rise to a significant out-of-plane polarized spin current. This spin current can drive field-free spin-orbit torque switching of perpendicular magnetization with high efficiency. Our results offer a promising strategy based on crystal symmetry design to manipulate spin current and could have potential applications in advanced spintronic devices.

Suggested Citation

  • Furong Han & Jing Zhang & Fan Yang & Bo Li & Yu He & Guansong Li & Youxiang Chen & Qisheng Jiang & Yan Huang & Hui Zhang & Jine Zhang & Huaiwen Yang & Huiying Liu & Qinghua Zhang & Hao Wu & Jingsheng , 2024. "Generation of out-of-plane polarized spin current by non-uniform oxygen octahedral tilt/rotation," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51820-w
    DOI: 10.1038/s41467-024-51820-w
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