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Room-temperature creation and conversion of individual skyrmion bags in magnetic multilayered disks

Author

Listed:
  • Quan Liu

    (Tsinghua University
    Tsinghua University)

  • Shouzhe Dong

    (Beijing Institute of Technology)

  • Yutong Wang

    (Tsinghua University
    Tsinghua University)

  • Junhang Liu

    (Chinese Academy of Sciences)

  • Guofu Xu

    (Lanzhou University)

  • Hua Bai

    (Tsinghua University)

  • Hao Bai

    (Tsinghua University
    Tsinghua University)

  • Weideng Sun

    (Tsinghua University
    Tsinghua University)

  • Zhiying Cheng

    (Tsinghua University
    Tsinghua University
    Tsinghua University)

  • Yunjie Yan

    (Tsinghua University
    Tsinghua University
    Tsinghua University)

  • Guozhi Chai

    (Lanzhou University)

  • Jing Ma

    (Tsinghua University)

  • Jianwang Cai

    (Chinese Academy of Sciences)

  • Cheng Song

    (Tsinghua University)

  • Wanjun Jiang

    (Tsinghua University
    Tsinghua University)

  • Jing Zhu

    (Tsinghua University
    Tsinghua University
    Tsinghua University)

  • Cewen Nan

    (Tsinghua University)

  • Houbing Huang

    (Beijing Institute of Technology)

  • Yonggang Zhao

    (Tsinghua University
    Tsinghua University)

Abstract

Skyrmion bags, with arbitrary topological charge Q, have recently attracted much interest, since such high-Q topological systems could open a way for topological magnetism research and are promising for spintronic applications with high flexibility for information encoding. Investigation on room-temperature skyrmion bags in magnetic multilayered structures is essential for applications and remains unexplored so far. Here, we demonstrate room-temperature creation and manipulation of individual skyrmion bags in magnetic multilayered disks. Individual skyrmion bags with varying topological charges are identified to remain stable at zero field. Furthermore, we realize intriguing field-driven topological conversion of skyrmion bags, as well as local manipulation of skyrmion bags via magnetic tips. Micromagnetic simulations indicate that the special boundary condition of the disks is responsible for skyrmion-bag formation and stability. These findings provide a platform to investigate individual skyrmion bags in confined multilayered structures, which could be useful for developing high-Q-based topological spintronic devices.

Suggested Citation

  • Quan Liu & Shouzhe Dong & Yutong Wang & Junhang Liu & Guofu Xu & Hua Bai & Hao Bai & Weideng Sun & Zhiying Cheng & Yunjie Yan & Guozhi Chai & Jing Ma & Jianwang Cai & Cheng Song & Wanjun Jiang & Jing , 2025. "Room-temperature creation and conversion of individual skyrmion bags in magnetic multilayered disks," Nature Communications, Nature, vol. 16(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-024-55489-z
    DOI: 10.1038/s41467-024-55489-z
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