中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Experimental observation of chiral magnetic bobbers in B20-type FeGe

文献类型:期刊论文

作者Zheng, Fengshan1,2; Rybakov, Filipp N.3,4,5; Borisov, Aleksandr B.4,5; Song, Dongsheng6; Wang, Shasha7,8,9; Li, Zi-An10; Du, Haifeng7,8,9; Kiselev, Nikolai S.11,12; Caron, Jan1,2; Kovacs, Andras1,2
刊名NATURE NANOTECHNOLOGY
出版日期2018-06-01
卷号13期号:6页码:451-+
ISSN号1748-3387
DOI10.1038/s41565-018-0093-3
英文摘要

Chiral magnetic skyrmions(1,2) are nanoscale vortex-like spin textures that form in the presence of an applied magnetic field in ferromagnets that support the Dzyaloshinskii-Moriya interaction (DMI) because of strong spin-orbit coupling and broken inversion symmetry of the crystal(3,4). In sharp contrast to other systems(5,6) that allow for the formation of a variety of two-dimensional (2D) skyrmions, in chiral magnets the presence of the DMI commonly prevents the stability and coexistence of topological excitations of different types(7). Recently, a new type of localized particle-like object-the chiral bobber (ChB)-was predicted theoretically in such materials(8). However, its existence has not yet been verified experimentally. Here, we report the direct observation of ChBs in thin films of B20-type FeGe by means of quantitative off-axis electron holography (EH). We identify the part of the temperature-magnetic field phase diagram in which ChBs exist and distinguish two mechanisms for their nucleation. Furthermore, we show that ChBs are able to coexist with skyrmions over a wide range of parameters, which suggests their possible practical applications in novel magnetic solid-state memory devices, in which a stream of binary data bits can be encoded by a sequence of skyrmions and bobbers.

WOS关键词ELECTRON HOLOGRAPHY ; WEAK FERROMAGNETISM ; SKYRMIONS ; FILMS ; SIZE
资助项目Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH009] ; Natural Science Foundation of China[51622105] ; Natural Science Foundation of China[11474290] ; Youth Innovation Promotion Association CAS[2015267] ; National Key RAMP;D Program of China[2017YFA0303201] ; Chinese Academy of Science[KJZD-SW-M01] ; Major/Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology[2016FXCX001] ; European Union through the Marie Curie Initial Training Network SIMDALEE2 ; European Research Council under the European Union[320832] ; Swedish Research Council[642-2013-7837]
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
出版者NATURE PUBLISHING GROUP
WOS记录号WOS:000434715700012
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/36955]  
专题合肥物质科学研究院_中科院强磁场科学中心
通讯作者Du, Haifeng; Kiselev, Nikolai S.
作者单位1.Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, Julich, Germany
2.Forschungszentrum Julich, Peter Grunberg Inst, Julich, Germany
3.KTH Royal Inst Technol, Dept Phys, Stockholm, Sweden
4.Russian Acad Sci, Ural Branch, MN Miheev Inst Met Phys, Ekaterinburg, Russia
5.Ural Fed Univ, Ekaterinburg, Russia
6.Tsinghua Univ, Natl Ctr Electron Microscopy Beijing, Sch Mat Sci & Engn, Beijing, Peoples R China
7.Chinese Acad Sci, Anhui Key Lab Condensed Matter Phys Extreme Condi, High Magnet Field Lab, Hefei, Anhui, Peoples R China
8.Univ Sci & Technol China, Chinese Acad Sci, Hefei, Anhui, Peoples R China
9.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing, Jiangsu, Peoples R China
10.Chinese Acad Sci, Inst Phys, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Zheng, Fengshan,Rybakov, Filipp N.,Borisov, Aleksandr B.,et al. Experimental observation of chiral magnetic bobbers in B20-type FeGe[J]. NATURE NANOTECHNOLOGY,2018,13(6):451-+.
APA Zheng, Fengshan.,Rybakov, Filipp N..,Borisov, Aleksandr B..,Song, Dongsheng.,Wang, Shasha.,...&Dunin-Borkowski, Rafal E..(2018).Experimental observation of chiral magnetic bobbers in B20-type FeGe.NATURE NANOTECHNOLOGY,13(6),451-+.
MLA Zheng, Fengshan,et al."Experimental observation of chiral magnetic bobbers in B20-type FeGe".NATURE NANOTECHNOLOGY 13.6(2018):451-+.

入库方式: OAI收割

来源:合肥物质科学研究院

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