Magnetic properties of RCoGe3 (R: Ce, Pr, and Nd) and strong anisotropy of the upper critical field in non-centrosymmetric compound CeCoGe3

• Méasson Marie-aude

  Graduate School of Science, Osaka University

• Muranaka Hiroshi

  Graduate School of Science, Osaka University

• Kawai Tomoya

  Graduate School of Science, Osaka University

• Ota Yuuki

  Graduate School of Science, Osaka University

• Sugiyama Kiyohiro

  Graduate School of Science, Osaka University KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University

• Hagiwara Masayuki

  KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University

• Kindo Koichi

  Institute for Solid State Physics, University of Tokyo

• Takeuchi Tetsuya

  Low Temperature Center, Osaka University

• Shimizu Katsuya

  KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University

• Honda Fuminori

  Graduate School of Science, Osaka University

• Settai Rikio

  Graduate School of Science, Osaka University

• Onuki Yoshichika

  Graduate School of Science, Osaka University

書誌事項

タイトル別名

• Magnetic Properties of RCoGe<SUB>3</SUB> (R: Ce, Pr, and Nd) and Strong Anisotropy of the Upper Critical Field in Non-centrosymmetric Compound CeCoGe<SUB>3</SUB>

抄録

We grew single crystals of RCoGe₃ (R: La, Ce, Pr, and Nd) by the Bi-flux method, and studied the magnetic properties of PrCoGe₃ and NdCoGe₃ and the pressure-induced superconducting property of CeCoGe₃. These compounds crystallize in a non-centrosymmetric tetragonal structure. PrCoGe₃ and NdCoGe₃ were found to be a paramagnet and an antiferromagnet with the Néel temperature T_N=3.8 K, respectively. Crystalline electric field (CEF) schemes were proposed for PrCoGe₃ and NdCoGe₃. The magnetic property of a pressure-induced superconductor CeCoGe₃ is highly different from those of PrCoGe₃ and NdCoGe₃, or a similar pressure-induced superconductor CeIrSi₃. This was discussed in connection with the superconductivity of CeCoGe₃. We clarified the upper critical field H_c2 for H||[001] and [100] by measuring the electrical resistivity under pressure P in magnetic fields: H_c2(0)\\simeq24 T for H||[001] and H_c2(0)\\simeq3.1 T for H||[100] at 0 K at P=7.1 GPa. A huge H_c2(0) value for H||[001] is a combined phenomenon between the Rashba-type antisymmetric spin–orbit interaction and the electronic instability, as observed in CeIrSi₃.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 78 (12), 124713-124713, 2009

  一般社団法人 日本物理学会

キーワード

• CeCoGe<SUB>3</SUB>
• PrCoGe<SUB>3</SUB>
• NdCoGe<SUB>3</SUB>
• non-centrosymmetry
• superconductivity
• crystalline electric field

詳細情報

• CRID: 1390001204196808832
• NII論文ID: 130005437294
• NII論文ID: 40016879666
• NII論文ID: 210000108139
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.78.124713
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 10480802
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10480802
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.78.124713
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
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