Study of magnetoresistance under hydrostatic pressure in the deuterated organic superconductor d8-κ-(BEDT-TTF)2Cu(SCN)2

T. Biggs, D. J. Bakker, A. K. Klehe, J. A. Symington, J. Singleton, T. Sasaki, M. Kurmoo

Research output: Contribution to journalConference articlepeer-review

Abstract

The Fermi surface topology of the deuterated organic superconductor d8-κ-(BEDT-TTF)2Cu(SCN)2 has been investigated by Shubnikov-de-Haas measurements under hydrostatic pressure (P < 1.5 GPa), in high magnetic fields (B < 17 T) and at low temperatures (T > 900 mK). The pressure dependences of the α-orbit, as well as the effective mass, m*, are resolved and correlated with the suppression of the superconductivity transition temperature, Tc, with increasing pressure. Superconductivity in d8-κ-(BEDT-TTF)2Cu(SCN)2 appears to be fully suppressed at pressures exceeding 0.25 GPa. The gap between the quasi-one-dimensional and quasi-two-dimensional section of the Fermi surface is seen to decrease with pressure. This gap, indicated by the magnetic breakdown field, is smaller in the deuterated than in the protonated sample.

Original languageEnglish
Pages (from-to)239-240
Number of pages2
JournalSynthetic Metals
Volume133-134
DOIs
Publication statusPublished - 2003 Mar 13
EventISCOM 2001 - Rusutsu, Hokkaido, Japan
Duration: 2001 Sep 102001 Sep 14

Keywords

  • BEDT-TTF
  • Deuteration
  • Effective mass
  • Organic superconductor
  • Pressure
  • Shubnikov-de-Haas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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