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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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X-ray imaging and multiferroic coupling of cycloidal magnetic domains in ferroelectric monodomain BiFeO3

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Title
X-ray imaging and multiferroic coupling of cycloidal magnetic domains in ferroelectric monodomain BiFeO3
Author
Johnson, RDBarone, PBombardi, ABean, RJPicozzi, SRadaelli, PGOh, Yoon SeokCheong, S-WChapon, LC
Issue Date
2013-05
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.110, no.21, pp.217206
Abstract
Magnetic domains at the surface of a ferroelectric monodomain BiFeO3 single crystal have been imaged by hard x-ray magnetic scattering. Magnetic domains up to several hundred microns in size have been observed, corresponding to cycloidal modulations of the magnetization along the wave vector k=(δ,δ,0) and symmetry equivalent directions. The rotation direction of the magnetization in all magnetic domains, determined by diffraction of circularly polarized light, was found to be unique and in agreement with predictions of a combined approach based on a spin-model complemented by relativistic density-functional simulations. Imaging of the surface shows that the largest adjacent domains display a 120° vortex structure.
URI
https://scholarworks.unist.ac.kr/handle/201301/12050
URL
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.217206
DOI
10.1103/PhysRevLett.110.217206
ISSN
0031-9007
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PHY_Journal Papers
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