Mott transition and superconductivity in the strongly correlated organic superconductor κ- (BEDT-TTF)2 Cu [N (CN)2] Br

T. Sasaki, N. Yoneyama, N. Kobayashi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The magnetic-field effect on the phase diagram of the organic Mott system κ- (BEDT-TTF)2 Cu [N (CN)2] Br in which the bandwidth was tuned by the substitution of deuterated molecules was studied by means of the resistivity measurements performed in magnetic fields. The lower critical point of the first-order Mott transition, which ended on the upper critical field Hc2 -temperature plane of the superconductivity, was determined experimentally in addition to the previously observed upper critical end point. The lower critical end point moved to a lower temperature with the suppression of Tc in magnetic fields and the Mott transition recognized so far as the S-shaped curve reached T=0 when H> Hc2 in the end.

Original languageEnglish
Article number054505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number5
DOIs
Publication statusPublished - 2008 Feb 12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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