Specific Heat and Superfluid Density for Possible Two Different Superconducting States in NaXCoO2・yH2O
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- Mochizuki Masahito
- RIKEN
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- Yuan H. Q.
- Department of Physics, University of Illinois at Urbana-Champaign
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- Ogata Masao
- Department of Physics, University of Tokyo
書誌事項
- タイトル別名
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- Specific Heat and Superfluid Density for Possible Two Different Superconducting States in Na<I><SUB>x</SUB></I>CoO<SUB>2</SUB>·<I>y</I>H<SUB>2</SUB>O
- Specific Heat and Superfluid Density for Possible Two Different Superconducting States in Na<sub><i>x</i></sub>CoO<sub>2</sub>·<i>y</i>H<sub>2</sub>O
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説明
Several thermodynamic measurements for the cobaltate superconductor, NaxCoO2·yH2O, have so far provided results inconsistent with each other. In order to solve the discrepancies, we microscopically calculate the temperature dependences of specific heat and superfluid density for this superconductor. We show that two distinct specific-heat data from Oeschler et al. and Jin et al. are reproduced, respectively, for the extended s-wave state and the p-wave state. Two different superfluid-density data are also reproduced for each case. These support our recent proposal of possible two different pairing states in this material. In addition, we discuss the experimentally proposed large residual Sommerfeld coefficient and extremely huge effective carrier mass.
収録刊行物
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- Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ
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Ｊｏｕｒｎａｌ ｏｆ ｔｈｅ Ｐｈｙｓｉｃａｌ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ 76 (2), 023702-023702, 2007
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679172163840
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- NII論文ID
- 130005296719
- 110006203495
- 210000106522
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- NII書誌ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 8639917
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可