Sim, Hasung, Lee, Seongsu, Hong, Kun-Pyo, Jeong, Jaehong ORCID: 0000-0002-5117-8576, Zhang, J. R., Kamiyama, T., Adroja, D. T., Murray, C. A., Thompson, S. P., Iga, F., Ji, S., Khomskii, D. and Park, Je-Geun (2016). Spontaneous structural distortion of the metallic Shastry-Sutherland system DyB4 by quadrupole-spin-lattice coupling. Phys. Rev. B, 94 (19). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

DyB4 has a two-dimensional Shastry-Sutherland (Sh-S) lattice with strong Ising character of the Dy ions. Despite the intrinsic frustrations, it undergoes two successive transitions: a magnetic ordering at T-N = 20K and a quadrupole ordering at T-Q = 12.5K. From high-resolution neutron and synchrotron x-ray powder diffraction studies, we have obtained full structural information on this material in all phases and demonstrate that structural modifications occurring at quadrupolar transition lead to the lifting of frustrations inherent in the Sh-S model. Our paper thus provides a complete experimental picture of how the intrinsic frustration of the Sh-S lattice can be lifted by the coupling to quadrupole moments. We show that two other factors, i.e., strong spin-orbit coupling and long-range Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in metallic DyB4, play an important role in this behavior.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sim, HasungUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lee, SeongsuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hong, Kun-PyoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jeong, JaehongUNSPECIFIEDorcid.org/0000-0002-5117-8576UNSPECIFIED
Zhang, J. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kamiyama, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adroja, D. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Murray, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Thompson, S. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Iga, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ji, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khomskii, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Park, Je-GeunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-255717
DOI: 10.1103/PhysRevB.94.195128
Journal or Publication Title: Phys. Rev. B
Volume: 94
Number: 19
Date: 2016
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9969
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RARE-EARTH TETRABORIDES; X-RAY-SCATTERING; MAGNETIC-STRUCTURE; GROUND-STATE; DIFFRACTION; FRUSTRATION; CRYSTALSMultiple languages
Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/25571

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