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Direct observation of twisted surface Skyrmions in bulk crystals

Abstract:

Magnetic skyrmions in noncentrosymmetric helimagnets with Dn symmetry are Bloch-type magnetization swirls with a helicity angle of ±90∘. At the surface of helimagnetic thin films below a critical thickness, a twisted skyrmion state with arbitrary helicity angle has been proposed, however, its direct experimental observation has remained elusive. Here, we show that circularly polarized resonant elastic x-ray scattering is able to unambiguously measure the helicity angle of surface skyrmions, p...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevLett.120.227202

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Oxford college:
Christ Church
Role:
Author
ORCID:
0000-0001-7947-3692
More from this funder
Funding agency for:
Zhang, S
Grant:
EP/N032128/1
More from this funder
Funding agency for:
Hesjedal, T
Grant:
EP/N032128/1
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review Letters Journal website
Volume:
120
Issue:
22
Article number:
227202
Publication date:
2018-05-31
Acceptance date:
2018-04-13
DOI:
ISSN:
1079-7114 and 0031-9007
Source identifiers:
846443
Pubs id:
pubs:846443
UUID:
uuid:848203ad-4a39-4496-b998-7bc4557e66d7
Local pid:
pubs:846443
Deposit date:
2018-05-06

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