Materials Viewpoint of Organic Superconductors

• Mori Hatsumi

  Institute for Solid State Physics, The University of Tokyo CREST, JST

抄録

Since the first discovery of an organic superconductor, TMTSF₂PF₆ (TMTSF = tetramethyltetraselenafulvalene) with the superconducting transition temperature (T_c)=0.9 K under 12 kbar, by the suppression of spin density wave (SDW) state, approximately 120 organic superconductors have been found. Among them, the highest T_c is 14.2 K under 82 kbar for β′-(BEDT-TTF)₂ICl₂ [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene]. Organic superconductors are categorized into three groups. (1) A superconducting (SC) state neighbors the SDW state, and appears by the suppression of the SDW state to afford a T_c below 1 K. (2) Another SC state is competitive with a nonmagnetic insulating state induced by anion ordering, charge density wave (CDW), or charge ordering, afford a T_c below 2 K. (3) Yet another SC state is next to an antiferromagnetic (AF) order to afford a T_c up to 14 K under an ambient condition or a pressurized condition. In this article, organic superconductors are reviewed on the basis of a variety of molecules, and finally, recent novel organic superconductors (MDT-TS)(AuI₂)_0.441 [MDT-TS = 5H-2-(1,3-diselenol-2-ylidene)-1,3,4,6-tetrathiapentalene] obtained by suppression with an incommensurate AF state and β-(meso-DMBEDT-TTF)₂I₃ [DMBEDT-TTF = dimethylbis(ethylenedithio)tetrathiafulvalene] in competition with a checkerboard-type charge-ordered (CO) state, are introduced.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 75 (5), 051003-051003, 2006

  一般社団法人 日本物理学会

キーワード

• organic superconductor
• SDW state
• antiferromagnetic state
• nonmagnetic insulating state
• CDW state
• charge-ordered state

詳細情報

• CRID: 1390282679162980864
• NII論文ID: 210000106115
• NII論文ID: 110004702293
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.75.051003
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 7907635
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7907635
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.75.051003
• 本文言語コード: en
• データソース種別:
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