| ID | 117927 |
| Title Alternative | f Electron Hybridized States and Optical Conductivity in Ce and Yb Compounds at High Pressures
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| Author |
Okamura, Hidekazu
Tokushima University
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Ohara, Shigeo
Nagoya Institute of Technology
Bauer, Eric D.
Los Alamos National Laboratory
Ōnuki, Yoshichika
University of the Ryukyu|RIKEN
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| Keywords | high pressure
optical conductivity
f electron states
intermediate valence
CeRhIn5
YbNi3Ga9
YbCu2Ge2
diamond anvil cell
infrared synchrotron radiation
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| Content Type |
Journal Article
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| Description | A review is given on our recent optical conductivity [σ(ω)] studies for heavy fermion Ce and Yb compounds under high pressure. Diamond anvil cells were used to generate high pressures and synchrotron radiation at SPring-8 was used as a bright infrared source. In the measured σ(ω) spectra, a marked peak is observed in the mid-infrared range due to a high density of 4f-derived states near the Fermi level. The infrared peak exhibits significant shifts toward high and low energies in Ce and Yb systems, respectively. These opposite tendencies in Ce and Yb systems are discussed in terms of pressure-induced shifts of the 4f level, and in terms of the electron-hole symmetry.
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| Journal Title |
The Review of High Pressure Science and Technology
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| ISSN | 0917639X
13481940
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| NCID | AN10452913
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| Publisher | 日本高圧力学会
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| Volume | 32
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| Issue | 1
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| Start Page | 42
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| End Page | 50
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| Published Date | 2022-03-01
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| Remark | 特集：高圧力が織りなす4f電子の世界
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| EDB ID | |
| DOI (Published Version) | |
| URL ( Publisher's Version ) | |
| FullText File | |
| language |
jpn
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| TextVersion |
Publisher
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| departments |
Science and Technology
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