Superconductivity and Metal–Insulator Transition in Twin-Columnar Organic Superconductor, (BETS)2(X2TCNQ)[X=Cl, Br]
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概要
- 論文の詳細を見る
Low-temperature electronic properties of the first all-organic donor-acceptor-type superconducting system, (BETS)2(X2TCNQ) [X=Cl, Br] under high pressure have been investigated by means of resistivity and 1H NMR experiments. The crystal structure of this class of complexes is characterized by a twin-columnar structure of BETS without intra-columnar dimerization at room temperature. Pressure-temperature phase diagrams are established for these compounds, where the electronic ground states are spin-density-wave (SDW's) insulators, except a narrow region of superconducting state in (BETS)2(Cl2TCNQ). A possible unified picture of the electronic states of the title compounds is discussed in terms of hydrostatic pressure effects and chemical substitution ones on them.
- Physical Society of Japanの論文
- 2001-10-15
著者
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IWASA Yoshihiro
Japan Advanced Institute of Science and Technology
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Hiraki Ko-ichi
Department Of Physics Gakushuin University
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Kagoshima Seiichi
Department Of Art And Science The University Of Tokyo
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Kondo Ryusuke
Department Of Art And Science The University Of Tokyo
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Mochida Tomoyuki
Department Of Chemistry Faculty Of Science Toho University
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Takahashi Toshihiro
Department Of Applied Biology Kyoto Institute Of Technology
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Hasegawa Tatsuo
Research Institute For Electronic Science Hokkaido University
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Hasegawa Tatsuo
Research Institute of Electronic Science, Hokkaido University, Sapporo, Hokkaido 060-0812
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Kondo Ryusuke
Department of Art and Science, the University of Tokyo, Komaba, Tokyo 153-8902
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Mochida Tomoyuki
Department of Chemistry, Toho University, Funabashi, Chiba 274-8510
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Takahashi Toshihiro
Department of Physics, Gakushuin University, Mejiro, Tokyo 171-8588
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Kagoshima Seiichi
Department of Art and Science, the University of Tokyo, Komaba, Tokyo 153-8902
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TAKAHASHI Toshihiro
Department of Animal Science, Faculty of Agriculture, Tohoku University
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