Non-Fermi Liquid-Like Behavior in a Heavy Lanthanide Compound YbFe₄P₁₂ with Filled Skutterudite Structure Probed by ³¹P-NMR

• Yamamoto Aya

  Department of Material Science, Graduate School of Science and Technology, Kobe University

• Wada Shinji

  Department of Material Science, Graduate School of Science and Technology, Kobe University Department of Physics, Faculty of Science, Kobe University

• Shirotani Ichimin

  Faculty of Engineering, Muroran Institute of Technology

• Sekine Chihiro

  Faculty of Engineering, Muroran Institute of Technology

書誌事項

タイトル別名

• Non-Fermi Liquid-Like Behavior in a Heavy Lanthanide Compound YbFe4P12 with Filled Skutterudite Structure Probed by 31P-NMR

抄録

We have carried out ³¹P-NMR study on a new intermediate-valence compound YbFe₄P₁₂ with a filled skutterudite structure which has heavy fermion-like properties below ∼10 K. The Knight shift has a very small value less than 0.05%, and the linewidth exhibits a monotonic increase without exhibiting any singular behavior down to 0.5 K. The nuclear spin–lattice relaxation rate 1⁄T₁T below ∼50 K strongly depends on both the temperature T and applied magnetic field H and follows the power-law relation 1⁄T₁T=AT^−α over one decade. The power α∼0.1 at 7.0 T increases with decreasing H and takes the maximum value of \\simeq0.7 at 0.2 T, which is close to the value 3/4 expected for the non-Fermi liquid (NFL) state associated with antiferromagnetic spin fluctuations. We suggest that YbFe₄P₁₂ is an interesting material in which the NFL-like behavior occurs below a rather high temperature of ∼10 K, and a magnetic field of about 0.2 T is sufficient to bring it to its quantum critical point.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 75 (6), 063703-, 2006

  一般社団法人 日本物理学会

キーワード

• non-Fermi liquid
• YbFe<SUB>4</SUB>P<SUB>12</SUB>
• skutterudite
• NMR

詳細情報

• CRID: 1390001204190427520
• NII論文ID: 110004731486
• NII論文ID: 210000106170
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.75.063703
• BIBCODE: 2006JPSJ...75f3703Y
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7940977
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7940977
• Web Site: https://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.063703
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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