Absence of Hybridization Gap in Heavy Electron Systems and Analysis of YbAl<SUB>3</SUB> in Terms of Nearly Free Electron Conduction Band
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- Kuroiwa Hiroyuki
- Department of Physics, Saitama University
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- Imai Yoshiki
- Department of Physics, Saitama University
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- Saso Tetsuro
- Department of Physics, Saitama University
Bibliographic Information
- Other Title
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- Absence of hybridization gap in heavy electron systems and analysis of YbAl3 in terms of nearly free electron conduction band
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Abstract
In the analysis of the heavy electron systems, theoretical models with c–f hybridization gap are often used. We point out that such a gap does not exist and the simple picture with the hybridization gap is misleading in the metallic systems, and present a correct picture by explicitly constructing an effective band model of YbAl3. Hamiltonian consists of a nearly free electron model for conduction bands which hybridize with localized f-electrons, and includes only a few parameters. Density of states, Sommerfeld coefficient, f-electron number and optical conductivity are calculated and compared with the band calculations and the experiments.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 76 (12), 124704-124704, 2007
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679172144256
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- NII Article ID
- 130005296661
- 110006532206
- 210000107034
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- NII Book ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 9305226
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed