Absence of hybridization gap in heavy electron systems and analysis of YbAl3 in terms of nearly free electron conduction band

• Kuroiwa Hiroyuki

  Department of Physics, Saitama University

• Imai Yoshiki

  Department of Physics, Saitama University

• Saso Tetsuro

  Department of Physics, Saitama University

書誌事項

タイトル別名

• Absence of Hybridization Gap in Heavy Electron Systems and Analysis of YbAl<SUB>3</SUB> in Terms of Nearly Free Electron Conduction Band

抄録

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.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 76 (12), 124704-124704, 2007

  一般社団法人 日本物理学会

キーワード

• YbAl<SUB>3</SUB>
• nearly free electron model
• empty-core pseudo-potential

詳細情報

• CRID: 1390282679172144256
• NII論文ID: 130005296661
• NII論文ID: 110006532206
• NII論文ID: 210000107034
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.76.124704
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 9305226
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9305226
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.76.124704
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可