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Interaction of Individual Skyrmions in a Nanostructured Cubic Chiral Magnet
Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230026, Anhui, Peoples R China.;Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China.;Anhui Univ, Sch Phys & Mat Sci, Dept Phys, Hefei 230601, Anhui, Peoples R China..
Fudan Univ, Collaborat Innovat Ctr Chem Energy Mat, Dept Mat Sci, Lab Adv Mat, Shanghai 200438, Peoples R China..
KTH, School of Engineering Sciences (SCI), Physics.
Russian Acad Sci, Ural Branch, MN Miheev Inst Met Phys, Ekaterinburg 620990, Russia..
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2018 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 120, no 19, article id 197203Article in journal (Refereed) Published
Abstract [en]

We report direct evidence of the field-dependent character of the interaction between individual magnetic skyrmions as well as between skyrmions and edges in B20-type FeGe nanostripes observed by means of high-resolution Lorentz transmission electron microscopy. It is shown that above certain critical values of an external magnetic field the character of such long-range skyrmion interactions changes from attraction to repulsion. Experimentally measured equilibrium inter-skyrmion and skyrmion-edge distances as a function of the applied magnetic field shows quantitative agreement with the results of micromagnetic simulations. The important role of demagnetizing fields and the internal symmetry of three-dimensional magnetic skyrmions are discussed in detail.

Place, publisher, year, edition, pages
American Physical Society, 2018. Vol. 120, no 19, article id 197203
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-230522DOI: 10.1103/PhysRevLett.120.197203ISI: 000432991900014PubMedID: 29799255Scopus ID: 2-s2.0-85047738204OAI: oai:DiVA.org:kth-230522DiVA, id: diva2:1234435
Funder
Swedish Research Council, 642-2013-7837Göran Gustafsson Foundation for Research in Natural Sciences and Medicine
Note

QC 20180724

Available from: 2018-07-24 Created: 2018-07-24 Last updated: 2018-07-24Bibliographically approved

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Rybakov, Filipp N.

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