Oscillations of the interlayer resistance in the quasi-two-dimensional organic conductor β-(BEDT-TTF)2I3 under pressure

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Abstract

We measured both the temperature and the angular dependence of the interlayer resistance of the quasi-two-dimensional organic conductor β-(BEDT-TTF)2I3 under a hydrostatic pressure of 7 kbar. We observed the Shubnikov-de Haas oscillations similar to those observed at the ambient pressure after pressure-temperature cycling. The amplitude of the oscillations was greatly reduced with pressure, but the quasi-two-dimensional nature was preserved in spite of a five-fold decrease in transition temperature (Tc). While the fundamental frequency increased by 6.3%, the ratio of the modulation frequency to the fundamental frequency decreased by 11%. Pressure rendered the Fermi surface more two-dimensional.

Original languageEnglish
Pages (from-to)1671-1673
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number5
DOIs
StatePublished - Mar 2008

Keywords

  • Fermi surface
  • Organic conductor
  • Quasi-two dimensional
  • Shubnikov-de Haas oscillations

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