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Steady motion of 80-nm-size skyrmions in a 100-nm-wide track

Author

Listed:
  • Dongsheng Song

    (Anhui University
    Chinese Academy of Sciences)

  • Weiwei Wang

    (Anhui University
    Chinese Academy of Sciences)

  • Shuisen Zhang

    (Chinese Academy of Sciences
    University of Science and Technology of China)

  • Yizhou Liu

    (Chinese Academy of Sciences)

  • Ning Wang

    (Chinese Academy of Sciences)

  • Fengshan Zheng

    (Forschungszentrum Jülich
    South China University of Technology)

  • Mingliang Tian

    (Chinese Academy of Sciences
    University of Science and Technology of China
    Anhui University)

  • Rafal E. Dunin-Borkowski

    (Forschungszentrum Jülich)

  • Jiadong Zang

    (University of New Hampshire
    University of New Hampshire)

  • Haifeng Du

    (Anhui University
    Chinese Academy of Sciences
    University of Science and Technology of China)

Abstract

The current-driven movement of magnetic skyrmions along a nanostripe is essential for the advancement and functionality of a new category of spintronic devices resembling racetracks. Despite extensive research into skyrmion dynamics, experimental verification of current-induced motion of ultra-small skyrmions within an ultrathin nanostripe is still pending. Here, we unveil the motion of individual 80 nm-size skyrmions in an FeGe track with an ultrathin width of 100 nm. The skyrmions can move steadily along the track over a broad range of current densities by using controlled pulse durations of as low as 2 ns. The potential landscape, arising from the magnetic edge twists in such a geometrically confined system, introduces skyrmion inertia and ensures efficient motion with a vanishing skyrmion Hall angle. Our results showcase the steady motion of skyrmions in an ultrathin track, offering a practical pathway for implementing skyrmion-based spintronic devices.

Suggested Citation

  • Dongsheng Song & Weiwei Wang & Shuisen Zhang & Yizhou Liu & Ning Wang & Fengshan Zheng & Mingliang Tian & Rafal E. Dunin-Borkowski & Jiadong Zang & Haifeng Du, 2024. "Steady motion of 80-nm-size skyrmions in a 100-nm-wide track," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-49976-6
    DOI: 10.1038/s41467-024-49976-6
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    1. Yao Guang & Xichao Zhang & Yizhou Liu & Licong Peng & Fehmi Sami Yasin & Kosuke Karube & Daisuke Nakamura & Naoto Nagaosa & Yasujiro Taguchi & Masahito Mochizuki & Yoshinori Tokura & Xiuzhen Yu, 2024. "Confined antiskyrmion motion driven by electric current excitations," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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