Polarity-controllable magnetic skyrmion filter  

作　　者：Xiao-Lin Ai Hui-Ting Li Xue-Feng Zhang Chang-Feng Li Je-Ho Shim Xiao-Ping Ma Hong-Guang Piao 艾啸林;李慧婷;张雪枫;李昌锋;沈帝虎;马晓萍;朴红光(Hubei Engineering Research Center of Weak Magnetic-Field Detection,College of Science,China Three Gorges University,Yichang 443002,China;Department of Physics,College of Science,Yanbian University,Yanji 133002,China)

机构地区：[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

出　　处：《Chinese Physics B》2024年第10期400-404,共5页中国物理B（英文版）

基　　金：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);the Applied Foundation Research Project(Talent Funding Project)of Yanbian University(Grant No.ydkj202241).

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 

分 类 号：TN713[电子电信—电路与系统]