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Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet

文献类型：期刊论文

作者Zhang, Yongsen1,5; Tang, Jin4; Wu, Yaodong3; Shi, Meng1,5; Xu, Xitong5; Wang, Shouguo2; Tian, Mingliang4,5; Du, Haifeng5
刊名NATURE COMMUNICATIONS
出版日期2024-04-22
卷号15
DOI10.1038/s41467-024-47730-6
通讯作者Tang, Jin(jintang@ahu.edu.cn) ; Du, Haifeng(duhf@hmfl.ac.cn)
英文摘要Topological spin textures are characterized by magnetic topological charges, Q, which govern their electromagnetic properties. Recent studies have achieved skyrmion bundles with arbitrary integer values of Q, opening possibilities for exploring topological spintronics based on Q. However, the realization of stable skyrmion bundles in chiral magnets at room temperature and zero magnetic field - the prerequisite for realistic device applications - has remained elusive. Here, through the combination of pulsed currents and reversed magnetic fields, we experimentally achieve skyrmion bundles with different integer Q values - reaching a maximum of 24 at above room temperature and zero magnetic field - in the chiral magnet Co8Zn10Mn2. We demonstrate the field-driven annihilation of high-Q bundles and present a phase diagram as a function of temperature and field. Our experimental findings are consistently corroborated by micromagnetic simulations, which reveal the nature of the skyrmion bundle as that of skyrmion tubes encircled by a fractional Hopfion. Manipulation of topological charge at room temperature is a key tenet of skyrmionics. Here, the authors demonstrate tunable topological charges in skyrmion bundles at room temperature and zero magnetic field.
WOS关键词REAL-SPACE OBSERVATION
资助项目National Key R&D Program of China[2022YFA1403603] ; Natural Science Foundation of China[12174396] ; Natural Science Foundation of China[12104123] ; Natural Science Foundation of China[12241406] ; National Natural Science Funds for Distinguished Young Scholar[52325105] ; Anhui Provincial Natural Science Foundation[2308085Y32] ; Natural Science Project of Colleges and Universities in Anhui Province[2022AH030011] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB33030100] ; CAS Project for Young Scientists in Basic Research[YSBR-084] ; Systematic Fundamental Research Program Leveraging Major Scientific and Technological Infrastructure, Chinese Academy of Sciences[JZHKYPT-2021-08] ; Anhui Province Excellent Young Teacher Training Project[YQZD2023067] ; China Postdoctoral Science Foundation[2023M743543]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001206372300027
出版者NATURE PORTFOLIO
资助机构National Key R&D Program of China ; Natural Science Foundation of China ; National Natural Science Funds for Distinguished Young Scholar ; Anhui Provincial Natural Science Foundation ; Natural Science Project of Colleges and Universities in Anhui Province ; Strategic Priority Research Program of Chinese Academy of Sciences ; CAS Project for Young Scientists in Basic Research ; Systematic Fundamental Research Program Leveraging Major Scientific and Technological Infrastructure, Chinese Academy of Sciences ; Anhui Province Excellent Young Teacher Training Project ; China Postdoctoral Science Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136337]  
专题中国科学院合肥物质科学研究院
通讯作者Tang, Jin; Du, Haifeng
作者单位1.USTC, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
2.Anhui Univ, Sch Mat Sci & Engn, Anhui Key Lab Magnet Funct Mat & Devices, Hefei 230601, Peoples R China
3.Hefei Normal Univ, Sch Phys & Mat Engn, Hefei 230601, Peoples R China
4.Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China
5.Chinese Acad Sci, Anhui Prov Key Lab Low Energy Quantum Mat & Device, High Magnet Field Lab, HFIPS, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yongsen,Tang, Jin,Wu, Yaodong,et al. Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet[J]. NATURE COMMUNICATIONS,2024,15.
APA Zhang, Yongsen.,Tang, Jin.,Wu, Yaodong.,Shi, Meng.,Xu, Xitong.,...&Du, Haifeng.(2024).Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet.NATURE COMMUNICATIONS,15.
MLA Zhang, Yongsen,et al."Stable skyrmion bundles at room temperature and zero magnetic field in a chiral magnet".NATURE COMMUNICATIONS 15(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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