Browsing by Author "Hamzic, Bojana"

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    Thermal expansion of the organic conductor β-(BEDT-TTF)2I3
    (1986) Hamzic, Bojana; Creuzet, Gerard; Schweitzer, Dieter; Keller, Heimo J.
    We report high resolution thermal expansion measurements between 1.2 and 300 K along the c*-axis in the organic conductor β-(BEDT-TTF)2I3 where the superconducting properties are strongly dependent on the way the system is prepared in the pressure-temperature diagram. We clearly observed a strong anomaly at 172 K related to the structural phase transition and the resistivity anomalies reported by several groups. The temperature analysis in the low temperature regime is coherent with a phonon dominant contribution. Finally, the presence of small hysteresis in a large region around the transitions seem to indicate why both the pressure and the temperature cycling may stabilize small regions of the high-Tc phase of the system, as observed.