Structural Phase Transition in the Spin Gap System YbAl<SUB>3</SUB>C<SUB>3</SUB>
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- Matsumura Takeshi
- Department of Quantum Matter, ADSM, Hiroshima University Department of Physics, Graduate School of Science, Tohoku University
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- Inami Toshiya
- Synchrotron Radiation Research Unit, Japan Atomic Energy Agency
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- Kosaka Masashi
- Graduate School of Science and Engineering, Saitama University
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- Kato Yoshiaki
- Graduate School of Science and Engineering, Saitama University
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- Inukai Takaki
- Department of Physics, Graduate School of Science, Tohoku University
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- Ochiai Akira
- Department of Physics, Graduate School of Science, Tohoku University
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- Nakao Hironori
- Department of Physics, Graduate School of Science, Tohoku University
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- Murakami Youichi
- Department of Physics, Graduate School of Science, Tohoku University
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- Katano Susumu
- Graduate School of Science and Engineering, Saitama University
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- Suzuki Hiroyuki S.
- National Institute for Materials Science
Bibliographic Information
- Other Title
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- Structural phase transition in the spin gap system YbAl3C3
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Description
The unresolved phase transition at 80 K in YbAl3C3 has been studied by X-ray diffraction. It has been confirmed that the transition is a structural one with atomic displacement. Superlattice reflections that appear below 80 K show that the crystal structure changes from hexagonal to orthorhombic. From the reflection conditions, we conclude that the space group in the low temperature phase is Pbca, where all the atoms occupy the general 8c site. By fitting the observed intensities, we present two possible models of atomic displacement. The displacement results in the deformation of the triangular lattice of Yb spins, which is considered to be responsible for the formation of a spin-singlet ground state at low temperatures.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 77 (10), 103601-103601, 2008
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390001204197013760
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- NII Article ID
- 130005436102
- 110006969273
- 210000107444
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- NII Book ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 9748291
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed