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Direct observation of attractive skyrmions and skyrmion clusters in the cubic helimagnet Cu2OSeO3

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Loudon, J. C., Leonov, A. O., Bogdanov, A. N., Ciomaga Hatnean, Monica and Balakrishnan, Geetha (2018) Direct observation of attractive skyrmions and skyrmion clusters in the cubic helimagnet Cu2OSeO3. Physical Review B, 97 (13). p. 134403. 134403. doi:10.1103/PhysRevB.97.134403 ISSN 2469-9950.

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Official URL: http://dx.doi.org/10.1103/PhysRevB.97.134403

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Abstract

We report the discovery of attractive magnetic skyrmions and their clusters in noncentrosymmetric ferromagnets. These three-dimensional solitons have been predicted to exist in the cone phase of chiral ferromagnets [J. Phys: Condens. Matter 28, 35LT01 (2016)] and are fundamentally different from the more common repulsive axisymmetric skyrmions that occur in the magnetically saturated state. We present real-space images of these skyrmion clusters in thin (∼70 nm) single crystal samples of Cu2OSeO3 taken using transmission electron microscopy and develop a phenomenological theory describing this type of skyrmion.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Ferromagnetic materials, Skyrme model, Solitons
Journal or Publication Title: Physical Review B
Publisher: American Physical Society
ISSN: 2469-9950
Official Date: 5 April 2018
Dates:
DateEvent
5 April 2018Published
5 April 2018Accepted
4 February 2018Submitted
Volume: 97
Number: 13
Page Range: p. 134403
Article Number: 134403
DOI: 10.1103/PhysRevB.97.134403
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Copyright Holders: American Physical Society
Date of first compliant deposit: 23 April 2018
Date of first compliant Open Access: 23 April 2018
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDRoyal Societyhttp://dx.doi.org/10.13039/501100000288
EP/N032128/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
EP/M028771/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
17H06889Japan Society for the Promotion of Sciencehttp://dx.doi.org/10.13039/501100001691

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