期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 19, 期 27, 页码 17526-17530出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp03022c
关键词
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资金
- ESRF
- IISc Bangalore
- ICTP Trieste
Cerium phosphide undergoes a unit-cell volume discontinuity without any structural phase transitions upon application of a high pressure of similar to 10 GPa. This phenomenon is attributed to a change in the electronic charge distribution of the cerium in CeP, but to date no direct experimental verification for this hypothesis has been presented. Here, we report a Ce L-3-edge X-ray absorption spectroscopy study under pressure, which provides direct compelling evidence of an electronic transition associated with the above-mentioned isostructural volume discontinuity. The present results should be relevant to the understanding of the phenomenon of pressure induced isostructural transitions involving unit-cell volume collapse.
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