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ID 117927
タイトル別表記
f Electron Hybridized States and Optical Conductivity in Ce and Yb Compounds at High Pressures
著者
大原, 繁男 名古屋工業大学
Bauer, Eric D. Los Alamos National Laboratory
大貫, 惇睦 琉球大学|理化学研究所
キーワード
high pressure
optical conductivity
f electron states
intermediate valence
CeRhIn5
YbNi3Ga9
YbCu2Ge2
diamond anvil cell
infrared synchrotron radiation
資料タイプ
学術雑誌論文
抄録
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.
掲載誌名
高圧力の科学と技術
ISSN
0917639X
13481940
cat書誌ID
AN10452913
出版者
日本高圧力学会
32
1
開始ページ
42
終了ページ
50
発行日
2022-03-01
備考
特集:高圧力が織りなす4f電子の世界
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
jpn
著者版フラグ
出版社版
部局
理工学系