Phase diagram of partially deuterated κ-(BEDT-TTF)2Cu[N(CN)2]Br

N. Matsunaga, K. Yamashita, M. Yamashita, A. Kawamoto, K. Nomura

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

The phase diagram of κ-(BEDT-TTF)2Cu[N(CN)2]Br around the metal-insulator (MI) boundary controlled by partially deuteration and by cooling rate through the 80 K anomaly has been investigated by resistivity measurements under magnetic fields. The humps of resistance were observed at 33.5 K corresponding to the T* anomaly and at 9.5 K with the hysteresis of resistance in the partially deuterated sample for slowly cooled. According to approach to the critical region of MI transition from the metallic side by the increase of cooling rate: (a) the hump of resistance at the T* anomaly is shifted towards a lower temperature and (b) the temperature of the resistance hump with the hysteresis increases. Our results suggest that these anomalies are related to the phase separation of the metallic and insulator phase around the MI boundary.

Original languageEnglish
Pages (from-to)591-592
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume388-389
DOIs
Publication statusPublished - 2003 May 1
Externally publishedYes
Eventproceedings of the 23rd international conference on low temper - Hiroshima, Japan
Duration: 2002 Aug 202002 Aug 27

Keywords

  • Electric transport
  • Metal-insulator transition
  • Organic crystals
  • κ-(BEDT-TTF)Cu[N(CN)]Br

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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