Evolution of Fermi Surface Properties in CexLa1-xB6 and PrxLa1-xB6

• Endo Motoki

  Graduate School of Science and Center for Low Temperature Science, Tohoku University

• Nakamura Shintaro

  Institute for Materials Research and Center for Low Temperature Science, Tohoku University

• Isshiki Toshiyuki

  Graduate School of Science and Center for Low Temperature Science, Tohoku University

• Kimura Noriaki

  Graduate School of Science and Center for Low Temperature Science, Tohoku University

• Nojima Tsutomu

  Institute for Materials Research and Center for Low Temperature Science, Tohoku University

• Aoki Haruyoshi

  Graduate School of Science and Center for Low Temperature Science, Tohoku University

• Harima Hisatomo

  Department of Physics, Kobe University

• Kunii Satoru

  Faculty of Engineering, Tohoku Gakuin University

書誌事項

タイトル別名

• Evolution of Fermi Surface Properties in CexLa1−xB6 and PrxLa1−xB6
• Evolution of Fermi Surface Properties in Ce_<i>x</i>La_1-<i>x</i>B₆ and Pr_<i>x</i>La_1-<i>x</i>B₆

抄録

We report the de Haas–van Alphen (dHvA) effect measurements of the Fermi surface properties in LaB₆, Ce_xLa_1−xB₆ (x=0.1, 0.25, 0.5, 0.75, 1.0) and Pr_xLa_1−xB₆ (x=0.25, 0.5, 0.75, 1.0) with particular attention to the spin dependence of the Fermi surface properties. The Fermi surface shape and dimension of Ce_xLa_1−xB₆ change considerably with Ce concentration, while those of Pr_xLa_1−xB₆ change very slightly up to x=0.75, and in PrB₆ the Fermi surface splits into the up and down spin Fermi surfaces. The effective mass of Ce_xLa_1−xB₆ increases considerably with Ce concentration and is nearly proportional to the number of Ce ions, whereas that of Pr_xLa_1−xB₆ increases slightly with Pr concentration. In Ce_xLa_1−xB₆ the effective mass depends very strongly on field and increases divergently with decreasing field, while that of Pr_xLa_1−xB₆ increases slightly with decreasing field. The contribution to the dHvA signal from the conduction electrons of one spin direction diminishes with Ce concentration and appears to disappear somewhere around x=0.25–0.5. A weak spin dependence is also found in Pr_xLa_1−xB₆. The behaviors of Ce_xLa_1−xB₆ and Pr_xLa_1−xB₆ are compared to discuss the origin of the spin dependence of the Fermi surface properties.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 75 (11), 114704-, 2006

  一般社団法人 日本物理学会

キーワード

• Ce<I><SUB>x</SUB></I>La<SUB>1−<I>x</I></SUB>B<SUB>6</SUB>
• Pr<I><SUB>x</SUB></I>La<SUB>1−<I>x</I></SUB>B<SUB>6</SUB>
• Fermi surface properties
• spin dependence
• dHvA effect

詳細情報

• CRID: 1390001204188784896
• NII論文ID: 110004852768
• NII論文ID: 210000106413
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.75.114704
• BIBCODE: 2006JPSJ...75k4704E
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 8537610
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8537610
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.114704
• 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