Calorimetric Study on Metal-Insulator Transition of Quasi-One-Dimensional BaVS_<b>3</b>

• Imai Hideto

  Department of Materials Science and Engineering, Kyoto University, Kyoto 606–01

• Wada Hirofumi

  Department of Materials Science and Engineering, Kyoto University, Kyoto 606–01

• Shiga Masayuki

  Department of Materials Science and Engineering, Kyoto University, Kyoto 606–01

書誌事項

タイトル別名

• Calorimetric Study on Metal-Insulator Transition of Quasi-One-Dimensional BaVS3.
• Calorimetric Study on Metal-Insulator T

抄録

The specific heat of BaVS₃, which undergoes a metal-insulator transition at T_MI=70 K, was measured in the temperature range of 1.4 K to 300 K. A specific heat anomaly was found at T_MI.The entropy change associated with this anomaly is estimated to be 4.7 J/K mol, which is close to R ln 2, the expected magnetic entropy for S=1/2 spins of V atoms. At low temperatures, a T-linear contribution of the specific heat with an apparent γ value of 15.7 mJ/K² mol was observed in spiteof the absence of conduction electrons. This T-linear contribution may be attributed to spin wave excitations for a one-dimensional antiferromagnet.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 65 (11), 3460-3463, 1996

  一般社団法人 日本物理学会

キーワード

• quasi-one-dimensional antiferromagnet
• BaVS<SUB>3</SUB>
• specific heat
• magnetic entropy
• spin wave
• spin frustration
• triangular lattice

詳細情報

• CRID: 1390001204182035584
• NII論文ID: 210000099728
• NII論文ID: 110001970018
• NII論文ID: 130004535450
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.65.3460
• BIBCODE: 1996JPSJ...65.3460I
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 4090576
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4090576
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.65.3460
• 本文言語コード: en
• データソース種別:
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