中国物理B ›› 2024, Vol. 33 ›› Issue (3): 37501-037501.doi: 10.1088/1674-1056/ad188f

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Creation and annihilation of artificial magnetic skyrmions with the electric field

Jun Cheng(程军)1,†, Liang Sun(孙亮)1,2,†, Yike Zhang(张一可)3,4, Tongzhou Ji(吉同舟)1, Rongxing Cao(曹荣幸)5, Bingfeng Miao(缪冰锋)1,2,‡, Yonggang Zhao(赵永刚)3,4,§, and Haifeng Ding(丁海峰)1,2,¶   

  1. 1 National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;
    2 Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    3 Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China;
    4 Frontier Science Center for Quantum Information, Tsinghua University, Beijing 100084, China;
    5 College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
  • 收稿日期:2023-10-19 修回日期:2023-12-14 接受日期:2023-12-25 出版日期:2024-02-22 发布日期:2024-02-22
  • 通讯作者: Bingfeng Miao, Yonggang Zhao, Haifeng Ding E-mail:bfmiao@nju.edu.cn;ygzhao@tsinghua.edu.cn;hfding@nju.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant Nos. 2021YFB3502400 and 2022YFA1403601), the National Natural Science Foundation of China (Grant Nos. 12274204, 12274203, 51831005, 52172270, 11974165, 92165103, 51971110, 12004329, and 12241402).

Creation and annihilation of artificial magnetic skyrmions with the electric field

Jun Cheng(程军)1,†, Liang Sun(孙亮)1,2,†, Yike Zhang(张一可)3,4, Tongzhou Ji(吉同舟)1, Rongxing Cao(曹荣幸)5, Bingfeng Miao(缪冰锋)1,2,‡, Yonggang Zhao(赵永刚)3,4,§, and Haifeng Ding(丁海峰)1,2,¶   

  1. 1 National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China;
    2 Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    3 Department of Physics, State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China;
    4 Frontier Science Center for Quantum Information, Tsinghua University, Beijing 100084, China;
    5 College of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, China
  • Received:2023-10-19 Revised:2023-12-14 Accepted:2023-12-25 Online:2024-02-22 Published:2024-02-22
  • Contact: Bingfeng Miao, Yonggang Zhao, Haifeng Ding E-mail:bfmiao@nju.edu.cn;ygzhao@tsinghua.edu.cn;hfding@nju.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant Nos. 2021YFB3502400 and 2022YFA1403601), the National Natural Science Foundation of China (Grant Nos. 12274204, 12274203, 51831005, 52172270, 11974165, 92165103, 51971110, 12004329, and 12241402).

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摘要： Recent theory and experiments show that artificial magnetic skyrmions can be stabilized at room temperature without the need for the external magnetic field, casting strong potentials for the device applications. In this work, we study the electric field manipulation of artificial magnetic skyrmions imprinted by Co disks on CoPt multilayers utilizing the micromagnetic simulations. We find that the reversible annihilation and creation of skyrmions can be realized with the electric field via the strain mediated magnetoelastic coupling. In addition, we also demonstrate controllable manipulation of individual skyrmion, which opens a new platform for constructing magnetic field-free and low-energy dissipation skyrmion based media.

关键词: skyrmions, magnetic anisotropy, micromagnetic simulations

Abstract: Recent theory and experiments show that artificial magnetic skyrmions can be stabilized at room temperature without the need for the external magnetic field, casting strong potentials for the device applications. In this work, we study the electric field manipulation of artificial magnetic skyrmions imprinted by Co disks on CoPt multilayers utilizing the micromagnetic simulations. We find that the reversible annihilation and creation of skyrmions can be realized with the electric field via the strain mediated magnetoelastic coupling. In addition, we also demonstrate controllable manipulation of individual skyrmion, which opens a new platform for constructing magnetic field-free and low-energy dissipation skyrmion based media.

Key words: skyrmions, magnetic anisotropy, micromagnetic simulations

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.78.Cd (Micromagnetic simulations ?) 12.39.Dc (Skyrmions)