Magnetic skyrmion bundles and their current-driven dynamics

doi:10.1038/s41565-021-00954-9

	Magnetic skyrmion bundles and their current-driven dynamics
	Tang, Jin 1,3; Wu, Yaodong 1,3,4; Wang, Weiwei 5; Kong, Lingyao 6; Lv, Boyao 1,3; Wei, Wensen 1,3; Zang, Jiadong 2,7; Tian, Mingliang 1,3,6; Du, Haifeng 1,3,5
刊名	NATURE NANOTECHNOLOGY
	2021-08-02
ISSN号	1748-3387
DOI	10.1038/s41565-021-00954-9
通讯作者	Du, Haifeng(duhf@hmfl.ac.cn)
英文摘要	Topological charge Q classifies non-trivial spin textures and determines many of their characteristics. Most abundant are topological textures with \|Q\| <= 1, such as (anti)skyrmions, (anti)merons or (anti)vortices. In this study we created and imaged in real space magnetic skyrmion bundles, that is, multi-Q three-dimensional skyrmionic textures. These textures consist of a circular spin spiral that ties together a discrete number of skyrmion tubes. We observed skyrmion bundles with integer Q values up to 55. We show here that electric currents drive the collective motion of these particle-like textures similar to skyrmions. Bundles with Q not equal 0 exhibit a skyrmion Hall effect with a Hall angle of similar to 62 degrees, whereas Q = 0 bundles, the so-called skyrmioniums, propagate collinearly with respect to the current flow, that is, with a skyrmion Hall angle of similar to 0 degrees. The experimental observation of multi-Q spin textures adds another member to the family of magnetic topological textures, which may serve in future spintronic devices. Non-trivial topological magnetic textures, such as skyrmions, merons or vortices, possess topological charges Q with absolute values smaller or equal to one. Now, skyrmion bundles, multi-Q three-dimensional skyrmionic textures, are observed and their current-driven dynamics are studied.
资助项目	National Key R&D Program of China[2017YFA0303201] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH009] ; Key Research Program of the Chinese Academy of Sciences[KJZD-SW-M01] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB33030100] ; Equipment Development Project of the Chinese Academy of Sciences[YJKYYQ20180012] ; Natural Science Foundation of China[51622105] ; Natural Science Foundation of China[11804343] ; Natural Science Foundation of China[11974021] ; High Magnetic Field Laboratory of Anhui Province
WOS关键词	LATTICE ; TEMPERATURE
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	NATURE RESEARCH
WOS记录号	WOS:000680343400001
资助机构	National Key R&D Program of China ; Key Research Program of Frontier Sciences, CAS ; Key Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Equipment Development Project of the Chinese Academy of Sciences ; Natural Science Foundation of China ; High Magnetic Field Laboratory of Anhui Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123173]
专题	中国科学院合肥物质科学研究院
通讯作者	Du, Haifeng
作者单位	1.Univ Sci & Technol China, Hefei, Peoples R China 2.Univ New Hampshire, Mat Sci Program, Durham, NH 03824 USA 3.Chinese Acad Sci, HFIPS, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei, Anhui, Peoples R China 4.Hefei Normal Univ, Sch Phys & Mat Engn, Key Lab Photoelect Detect Sci & Technol, Educ Dept Anhui Prov, Hefei, Peoples R China 5.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei, Peoples R China 6.Anhui Univ, Sch Phys & Mat Sci, Hefei, Peoples R China 7.Univ New Hampshire, Dept Phys & Astron, Durham, NH 03824 USA
推荐引用方式 GB/T 7714	Tang, Jin,Wu, Yaodong,Wang, Weiwei,et al. Magnetic skyrmion bundles and their current-driven dynamics[J]. NATURE NANOTECHNOLOGY,2021.
APA	Tang, Jin.,Wu, Yaodong.,Wang, Weiwei.,Kong, Lingyao.,Lv, Boyao.,...&Du, Haifeng.(2021).Magnetic skyrmion bundles and their current-driven dynamics.NATURE NANOTECHNOLOGY.
MLA	Tang, Jin,et al."Magnetic skyrmion bundles and their current-driven dynamics".NATURE NANOTECHNOLOGY (2021).