Impurity Effect on Superconducting Properties in Molecular Substituted Organic Superconductor κ-(ET)<SUB>2</SUB>Cu(NCS)<SUB>2</SUB>

• Yoneyama Naoki

  Institute for Materials Research, Tohoku University

• Sasaki Takahiko

  Institute for Materials Research, Tohoku University

• Oizumi Hajime

  Institute for Materials Research, Tohoku University

• Kobayashi Norio

  Institute for Materials Research, Tohoku University

Bibliographic Information

Other Title

• Impurity effect on superconducting properties in molecular substituted organic superconductor κ-(ET)2Cu(NCS)2
• Impurity effect on superconducting properties in molecular substituted organic superconductor k ET 2Cu NCS 2

Abstract

We report an impurity effect in the organic superconductor κ-(ET)₂Cu(NCS)₂ by substitution of the ET molecule with an analogue, bis(methylenedithio)tetrathiafulvalene (MT). The superconducting transition temperature decreases with increasing substitution. The in-plane magnetic penetration depth is enhanced with substitution, which is quantitatively attributed to the decrease in the in-plane mean free path. The enhancement of the penetration depth can also explain the reduction of the effective pinning in terms of the condensation energy.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 76 (12), 123705-123705, 2007

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• organic superconductor
• impurity
• penetration depth
• mean free path
• molecular substitution
• magnetization

Details

• CRID: 1390001204195485056
• NII Article ID: 130005296705
• NII Article ID: 110006532186
• NII Article ID: 210000107014
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.76.123705
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 9304823
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9304823
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.76.123705
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed