中国物理B ›› 2024, Vol. 33 ›› Issue (10): 107502-107502.doi: 10.1088/1674-1056/ad6421

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Polarity-controllable magnetic skyrmion filter

Xiao-Lin Ai(艾啸林)1,†, Hui-Ting Li(李慧婷)2,†, Xue-Feng Zhang(张雪枫)2, Chang-Feng Li(李昌锋)2, Je-Ho Shim(沈帝虎)2,‡, Xiao-Ping Ma(马晓萍)2, and Hong-Guang Piao(朴红光)1,2,§   

  1. 1 Hubei Engineering Research Center of Weak Magnetic-Field Detection, College of Science, China Three Gorges University, Yichang 443002, China;
    2 Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • 收稿日期:2024-05-19 修回日期:2024-07-09 接受日期:2024-07-17 发布日期:2024-09-21
  • 通讯作者: Je-Ho Shim, Hong-Guang Piao E-mail:shendihu@gmail.com;hgpiao@ybu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 12364020), the Scientific and Technological Development Plan of Jilin Province, China (Grant No. 20240101295JC), the Science and Technology Research and Planning Project of Jilin Provincial Department of Education (Grant No. JJKH20230611KJ), and the Applied Foundation Research Project (Talent Funding Project) of Yanbian University (Grant No. ydkj202241).

Polarity-controllable magnetic skyrmion filter

Xiao-Lin Ai(艾啸林)1,†, Hui-Ting Li(李慧婷)2,†, Xue-Feng Zhang(张雪枫)2, Chang-Feng Li(李昌锋)2, Je-Ho Shim(沈帝虎)2,‡, Xiao-Ping Ma(马晓萍)2, and Hong-Guang Piao(朴红光)1,2,§   

  1. 1 Hubei Engineering Research Center of Weak Magnetic-Field Detection, College of Science, China Three Gorges University, Yichang 443002, China;
    2 Department of Physics, College of Science, Yanbian University, Yanji 133002, China
  • Received:2024-05-19 Revised:2024-07-09 Accepted:2024-07-17 Published:2024-09-21
  • Contact: Je-Ho Shim, Hong-Guang Piao E-mail:shendihu@gmail.com;hgpiao@ybu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 12364020), the Scientific and Technological Development Plan of Jilin Province, China (Grant No. 20240101295JC), the Science and Technology Research and Planning Project of Jilin Provincial Department of Education (Grant No. JJKH20230611KJ), and the Applied Foundation Research Project (Talent Funding Project) of Yanbian University (Grant No. ydkj202241).

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摘要： The skyrmion generator is one of the indispensable components for the future functional skyrmion devices, but the process of generating skyrmion cannot avoid mixing with other magnetic textures, such as skyrmionium and nested skyrmion bags. These mixed magnetic textures will inevitably lead to the blockage of skyrmion transport and even the distortion of data information. Therefore, the design of an efficient skyrmion filter is of great significance for the development of skyrmion-based spintronic devices. In this work, a skyrmion filter scheme is proposed, and the high-efficiency filtering function is demonstrated by micromagnetic simulations. The results show that the filtering effect of the scheme depends on the structure geometry and the spin current density that drives the skyrmion. Based on this scheme, the polarity of the filtered skyrmion can be controlled by switching the magnetization state at the output end, and the "cloning" of the skyrmion can be realized by geometric optimization of the structure. We believe that in the near future, the skyrmion filter will become one of the important components of skyrmion-based spintronic devices in the future.

关键词: spintronics, skyrmions, skyrmion filter, skyrmion polarity, skyrmion clone

Abstract: The skyrmion generator is one of the indispensable components for the future functional skyrmion devices, but the process of generating skyrmion cannot avoid mixing with other magnetic textures, such as skyrmionium and nested skyrmion bags. These mixed magnetic textures will inevitably lead to the blockage of skyrmion transport and even the distortion of data information. Therefore, the design of an efficient skyrmion filter is of great significance for the development of skyrmion-based spintronic devices. In this work, a skyrmion filter scheme is proposed, and the high-efficiency filtering function is demonstrated by micromagnetic simulations. The results show that the filtering effect of the scheme depends on the structure geometry and the spin current density that drives the skyrmion. Based on this scheme, the polarity of the filtered skyrmion can be controlled by switching the magnetization state at the output end, and the "cloning" of the skyrmion can be realized by geometric optimization of the structure. We believe that in the near future, the skyrmion filter will become one of the important components of skyrmion-based spintronic devices in the future.

Key words: spintronics, skyrmions, skyrmion filter, skyrmion polarity, skyrmion clone

中图分类号:  (Magnetotransport phenomena; materials for magnetotransport)

  • 75.47.-m
12.39.Dc (Skyrmions) 75.78.Cd (Micromagnetic simulations ?)