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research article

Resonant elastic x-ray scattering from the skyrmion lattice in Cu2OSeO3

Zhang, S. L.
•
Bauer, A.
•
Berger, H.  
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2016
Physical Review B

We report the study of the skyrmion state near the surface of Cu2OSeO3 using soft resonant elastic x-ray scattering (REXS) at the Cu L-3 edge. Within the lateral sampling area of 200 x 200 mu m(2), we found a long-range-ordered skyrmion lattice phase as well as the formation of skyrmion domains via the multiple splitting of the diffraction spots. In a recent REXS study of the skyrmion phase of Cu2OSeO3 [M. C. Langner, S. Roy, S. Mishra, J. Lee, X. Shi, M. Hossain, Y.-D. Chuang, S. Seki, Y. Tokura, S. Kevan, and R. Schoenlein, Phys. Rev. Lett. 112, 167202 (2014)], the authors reported the observation of the unexpected existence of two distinct skyrmion sublattices that arise from inequivalent Cu sites, and that the rotation and superposition of the two periodic structures lead to a moire pattern. However, we find no energy splitting of the Cu peak in x-ray-absorption measurements and, instead, discuss alternative origins of the peak splitting. In particular, we find that for magnetic field directions deviating from the major cubic axes a multidomain skyrmion lattice state is obtained, which consistently explains the splitting of the magnetic spots into two- and more-peaks.

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Type
research article
DOI
10.1103/PhysRevB.93.214420
Web of Science ID

WOS:000378049300003

Author(s)
Zhang, S. L.
Bauer, A.
Berger, H.  
Pfleiderer, C.
Van Der Laan, G.
Hesjedal, T.
Date Issued

2016

Publisher

Amer Physical Soc

Published in
Physical Review B
Volume

93

Issue

21

Article Number

214420

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LSE  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127576
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