Real-space imaging of confined magnetic skyrmion tubes

被引：118

作者：

Birch, M. T. ^{[1
,2
]}

Cortes-Ortuno, D. ^{[3
]}

Turnbull, L. A. ^{[1
]}

Wilson, M. N. ^{[1
]}

Gross, F. ^{[4
]}

Traeger, N. ^{[4
]}

Laurenson, A. ^{[5
]}

Bukin, N. ^{[5
]}

Moody, S. H. ^{[1
]}

Weigand, M. ^{[4
,6
]}

Schuetz, G. ^{[4
]}

Popescu, H. ^{[7
]}

Fan, R. ^{[2
]}

Steadman, P. ^{[2
]}

Verezhak, J. A. T. ^{[8
]}

Balakrishnan, G. ^{[8
]}

Loudon, J. C. ^{[9
]}

Twitchett-Harrison, A. C. ^{[9
]}

Hovorka, O. ^{[3
]}

Fangohr, H. ^{[3
,10
]}

Grin, F. Y. ^{[5
]}

Graefe, J. ^{[4
]}

Hatton, P. D. ^{[1
]}

机构：

[1] Univ Durham, Ctr Mat Phys, Durham DH1 3LE, England

[2] Diamond Light Source, Didcot OX11 0DE, Oxon, England

[3] Univ Southampton, Fac Engn & Phys Sci, Southampton SO17 1BJ, Hants, England

[4] Max Planck Inst Intelligent Syst, D-70569 Stuttgart, Germany

[5] Univ Exeter, Sch Phys & Astron, Exeter EX4 4QL, Devon, England

[6] Helmholtz Zentrum Berlin Mat & Energie GmbH, Inst Nanospektroskopie, Kekulestr 5, D-12489 Berlin, Germany

[7] Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France

[8] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[9] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England

[10] European XFEL GmbH, Holzkoppel 4, D-22869 Schenefeld, Germany

来源：

NATURE COMMUNICATIONS | 2020年 / 11卷 / 01期

基金：

英国工程与自然科学研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

LATTICE; DYNAMICS; STATES;

D O I：

10.1038/s41467-020-15474-8

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Magnetic skyrmions are topologically nontrivial particles with a potential application as information elements in future spintronic device architectures. While they are commonly portrayed as two dimensional objects, in reality magnetic skyrmions are thought to exist as elongated, tube-like objects extending through the thickness of the host material. The study of this skyrmion tube state (SkT) is vital for furthering the understanding of skyrmion formation and dynamics for future applications. However, direct experimental imaging of skyrmion tubes has yet to be reported. Here, we demonstrate the real-space observation of skyrmion tubes in a lamella of FeGe using resonant magnetic x-ray imaging and comparative micromagnetic simulations, confirming their extended structure. The formation of these structures at the edge of the sample highlights the importance of confinement and edge effects in the stabilisation of the SkT state, opening the door to further investigation into this unexplored dimension of the skyrmion spin texture. Magnetic skyrmions are thought to possess a tube-like structure in three dimensions, but this has not been directly observed in experiment. Here, Birch et al. report real-space imaging of skyrmion tubes in a lamella of FeGe.

引用

页数：8

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