| Item type |
文献 / Documents(1) |
| 公開日 |
2020-04-10 |
| アクセス権 |
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|
アクセス権 |
open access |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
|
資源タイプ |
conference paper |
| 出版社版DOI |
|
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.7566/JPSCP.30.011120 |
|
|
言語 |
ja |
|
|
関連名称 |
10.7566/JPSCP.30.011120 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Optical Conductivity Study of f Electron States in YbCu2Ge2 at High Pressures to 20 GPa |
|
言語 |
en |
| 著者 |
岡村, 英一
ナガタ, マコト
ツボウチ, アツシ
オオヌキ, ヨシチカ
イケモト, ユカ
モリワキ, タロウ
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Optical conductivity [σ(ω)] of YbCu2Ge2 has been measured at external pressures (P) to 20 GPa, to study the P evolution of f electron hybridized states. At P=0, σ(ω) shows a marked mid-infrared (mIR) peak at 0.37 eV, which is due to optical excitations from f14 (Yb2+) state located below the Fermi level. With increasing P, the mIR peak shows significant shifts to lower energy, reaching 0.18 eV at P=20 GPa. This result indicates that the f14 energy level increases toward the Fermi level with P. Such a shift of the f electron level with P has been expected from theoretical considerations, but had never been demonstrated by spectroscopic experiment under high P. The obtained results are also analyzed in terms of the P evolution of the conduction-f electron hybridization. |
|
言語 |
en |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
f electron hybridized state |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
high pressure |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
optical conductivity |
| 書誌情報 |
en : JPS Conference Proceedings
巻 30,
p. 011120,
発行日 2020-03-19
|
| ISBN |
|
|
|
識別子タイプ |
ISBN |
|
|
関連識別子 |
9784890271429 |
| 収録物ID |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
24353892 |
| 出版者 |
|
|
出版者 |
The Physical Society of Japan |
|
言語 |
en |
| 備考 |
|
|
言語 |
ja |
|
値 |
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019) |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This article is published by the Physical Society of Japan under the terms of the Creative Commons Attribution 4.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the article, journal citation, and DOI. |
| EID |
|
|
識別子 |
361897 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
jpscp_30_011120.pdf (451 KB)
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