Neel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer

doi:10.1002/adma.202006924

	Neel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer
	Cui, Baoshan 1,2; Yu, Dongxing 3; Shao, Ziji 3; Liu, Yizhou 2,4; Wu, Hao 5; Nan, Pengfei 6; Zhu, Zengtai 1,2; Wu, Chuangwen 1,7; Guo, Tengyu 1; Chen, Peng 1
刊名	ADVANCED MATERIALS
	2021-02-18
关键词	anisotropic strain Dzyaloshinskii– Moriya interaction anisotropy elliptical skyrmions magnetic anisotropy
ISSN号	0935-9648
DOI	10.1002/adma.202006924
通讯作者	Yang, Hongxin(hongxin.yang@nimte.ac.cn) ; Yu, Guoqiang(guoqiangyu@iphy.ac.cn)
英文摘要	Magnetic skyrmions, topological-chiral spin textures, have potential applications in next-generation high-density and energy-efficient spintronic devices for information storage and logic technologies. Tailoring the detailed spin textures of skyrmions is of pivotal importance for tuning skyrmion dynamics, which is one of the key factors for the design of skyrmionic devices. Here, the direct observation of parallel aligned elliptical magnetic skyrmions in Pt/Co/Ta multilayers with an oblique-angle deposited Co layer is reported. Domain wall velocity and spin-orbit-torque-induced out-of-plane effective field analysis demonstrate that the formation of unusual elliptical skyrmions is correlated to the anisotropic effective perpendicular magnetic anisotropy energy density (K-u(eff)) and Dzyaloshinskii-Moriya interaction (DMI) in the film plane. Structural analysis and first-principles calculations further show that the anisotropic K-u(eff) and DMI originate from the interfacial anisotropic strain introduced by the oblique-angle deposition. The work provides a method to tune the spin textures of skyrmions in magnetic multilayers and, thereby, a new degree of freedom for the design of skyrmionic devices.
资助项目	National Natural Science Foundation of China (NSFC)[11874409] ; National Natural Science Foundation of China (NSFC)[51671098] ; National Natural Science Foundation of China (NSFC)[91963201] ; National Natural Science Foundation of China (NSFC)[11874059] ; Beijing Natural Science Foundation[Z190009] ; Strategic Priority Research Program (B)[XDB07030200] ; Key Research Program of Frontier Sciences[QYZDJ-SSW-SLH016] ; Key Research Program of Frontier Sciences[ZDBS-LY-7021] ; Science Center of the National Science Foundation of China[52088101] ; NSFC-Science Foundation Ireland (SFI)[51861135104] ; K. C. Wong Education Foundation[GJTD-2019-14] ; China Postdoctoral Science Foundation[2020M670499] ; 111 Project[B20063] ; Special Postdoctoral Researchers Program of RIKEN ; [KQTD20180413181702403]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000618960300001
资助机构	National Natural Science Foundation of China (NSFC) ; Beijing Natural Science Foundation ; Strategic Priority Research Program (B) ; Key Research Program of Frontier Sciences ; Science Center of the National Science Foundation of China ; NSFC-Science Foundation Ireland (SFI) ; K. C. Wong Education Foundation ; China Postdoctoral Science Foundation ; 111 Project ; Special Postdoctoral Researchers Program of RIKEN
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120227]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Hongxin; Yu, Guoqiang
作者单位	1.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China 4.RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan 5.Univ Calif Los Angeles, Dept Elect & Comp Engn, Los Angeles, CA 90095 USA 6.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 7.Hubei Univ, Fac Phys & Elect Sci, Wuhan 430062, Peoples R China 8.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 9.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 10.Lanzhou Univ, Sch Phys Sci & Technol, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Cui, Baoshan,Yu, Dongxing,Shao, Ziji,et al. Neel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer[J]. ADVANCED MATERIALS,2021.
APA	Cui, Baoshan.,Yu, Dongxing.,Shao, Ziji.,Liu, Yizhou.,Wu, Hao.,...&Yu, Guoqiang.(2021).Neel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer.ADVANCED MATERIALS.
MLA	Cui, Baoshan,et al."Neel-Type Elliptical Skyrmions in a Laterally Asymmetric Magnetic Multilayer".ADVANCED MATERIALS (2021).