Hitoshi Yamaoka
;
Ayako Ohmura
;
Naohito Tsujii
(National Institute for Materials Science
)
;
Hirofumi Ishii
;
Nozomu Hiraoka
;
Hitoshi Sato
;
Masahiro Sawada
Collection
Citation
Description:
(abstract)Electronic and crystal structures of YbCu, YbCu2, and YbCu6.5 were studied by high-resolution X-ray absorption spectroscopy and X-ray diffraction under pressure. YbCu exhibited a first-order transition with a sudden change in the Yb valence at 4 GPa without a structural transition. YbCu2 showed a gradual Yb valence change up to 11.8 GPa. Anomalous re-entrant valence transition to a lower valence state was found in YbCu6.5 at 3-4 GPa without a structural transition.
Rights:
Keyword: Yb compound, valence, pressure, X-ray absorption
Date published: 2024-04-17
Publisher: American Physical Society (APS)
Journal:
- Physical Review B (ISSN: 1550235X) vol. 109 issue. 15 155147
Funding:
- National Synchrotron Radiation Research Center 2017B4260
- Japan Society for the Promotion of Science 18K18743
- National Synchrotron Radiation Research Center 2017B4267
- National Synchrotron Radiation Research Center 2018A4258
- National Synchrotron Radiation Research Center 2018A4141
- National Synchrotron Radiation Research Center 2017-2-179
- National Synchrotron Radiation Research Center 2018-1-039
- National Synchrotron Radiation Research Center 2018-1-012
- National Synchrotron Radiation Research Center 2018-2-267
- National Synchrotron Radiation Research Center 17AG009
- National Synchrotron Radiation Research Center 18AG003
Manuscript type: Author's version (Accepted manuscript)
MDR DOI: https://doi.org/10.48505/nims.4846
First published URL: https://doi.org/10.1103/physrevb.109.155147
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Updated at: 2024-10-15 12:30:17 +0900
Published on MDR: 2024-10-15 12:30:19 +0900
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