Superconductivity at 14.2K in Layered Organics under Extreme Pressure.

• Taniguchi Hiromi

  Department of Physics, Faculty of Science, Saitama University

• Miyashita Masashi

  Department of Physics, Faculty of Science, Saitama University

• Uchiyama Kenichi

  Department of Physics, Faculty of Science, Saitama University

• Satoh Kazuhiko

  Department of Physics, Faculty of Science, Saitama University

• Môri Nobuo

  Department of Physics, Faculty of Science, Saitama University

• Okamoto Hiroyuki

  Faculty of Medicine, Kanazawa University

• Miyagawa Kazuya

  Department of Applied Physics, University of Tokyo

• Kanoda Kazushi

  Department of Applied Physics, University of Tokyo

• Hedo Masato

  Institute for Solid State Physics (ISSP), University of Tokyo

• Uwatoko Yoshiya

  Institute for Solid State Physics (ISSP), University of Tokyo

Abstract

We demonstrate that an organic Mott insulator, β′-(BEDT-TTF)₂ICl₂, is metallized by application of extremely high pressure by means of the cubic anvil press. When the metallic state is stabilized, superconductivity with the highest transition-temperature (T_c) among the organic systems appears. The lower limit of the pressure at which the superconducting transition manifests itself is approximately 7.0 GPa and T_c reaches a maximum value, 14.2 K (onset), at 8.2 GPa. The pressure-temperature phase diagram is constructed and discussed in terms of the comparison with those of other organic systems.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 72 (3), 468-471, 2003

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• β′-(BEDT-TTF)<SUB>2</SUB>ICl<SUB>2</SUB>
• organic superconductor
• superconducting transition temperature
• high pressure
• cubic anvil press
• phase diagram

Details

• CRID: 1390282679159429888
• NII Article ID: 210000104657
• NII Article ID: 110001974245
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.72.468
• BIBCODE: 2003JPSJ...72..468T
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 6479279
• Web Site: http://id.ndl.go.jp/bib/6479279
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6479279
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.72.468
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed