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Edge-mediated skyrmion chain and its collective dynamics in a confined geometry

Author

Listed:
  • Haifeng Du

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS))

  • Renchao Che

    (Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University)

  • Lingyao Kong

    (Computational Physics and computational Mechanics, Institute of Fluid Physics, China Academy of Engineering Physics)

  • Xuebing Zhao

    (Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University)

  • Chiming Jin

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS))

  • Chao Wang

    (Laboratory of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University)

  • Jiyong Yang

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS))

  • Wei Ning

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS))

  • Runwei Li

    (Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences)

  • Changqing Jin

    (Key Laboratory of Extreme Conditions Physics, Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences)

  • Xianhui Chen

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS)
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University
    Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China)

  • Jiadong Zang

    (Materials Science Program, University of New Hampshire)

  • Yuheng Zhang

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS)
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

  • Mingliang Tian

    (High Magnetic Field Laboratory, Chinese Academy of Science (CAS)
    Collaborative Innovation Center of Advanced Microstructures, Nanjing University)

Abstract

The emergence of a topologically nontrivial vortex-like magnetic structure, the magnetic skyrmion, has launched new concepts for memory devices. Extensive studies have theoretically demonstrated the ability to encode information bits by using a chain of skyrmions in one-dimensional nanostripes. Here, we report experimental observation of the skyrmion chain in FeGe nanostripes by using high-resolution Lorentz transmission electron microscopy. Under an applied magnetic field, we observe that the helical ground states with distorted edge spins evolve into individual skyrmions, which assemble in the form of a chain at low field and move collectively into the interior of the nanostripes at elevated fields. Such a skyrmion chain survives even when the width of the nanostripe is much larger than the size of single skyrmion. This discovery demonstrates a way of skyrmion formation through the edge effect, and might, in the long term, shed light on potential applications.

Suggested Citation

  • Haifeng Du & Renchao Che & Lingyao Kong & Xuebing Zhao & Chiming Jin & Chao Wang & Jiyong Yang & Wei Ning & Runwei Li & Changqing Jin & Xianhui Chen & Jiadong Zang & Yuheng Zhang & Mingliang Tian, 2015. "Edge-mediated skyrmion chain and its collective dynamics in a confined geometry," Nature Communications, Nature, vol. 6(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9504
    DOI: 10.1038/ncomms9504
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    Cited by:

    1. Peter Meisenheimer & Hongrui Zhang & David Raftrey & Xiang Chen & Yu-Tsun Shao & Ying-Ting Chan & Reed Yalisove & Rui Chen & Jie Yao & Mary C. Scott & Weida Wu & David A. Muller & Peter Fischer & Robe, 2023. "Ordering of room-temperature magnetic skyrmions in a polar van der Waals magnet," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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