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Authors: Hamzic, Bojana
Creuzet, Gerard
Schweitzer, Dieter
Keller, Heimo J.
Title: Thermal expansion of the organic conductor β-(BEDT-TTF)2I3
Issue Date: 1986 Zeitschriftenartikel Solid state communications 60 (1986), S. 763-766. URL
Abstract: 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.
Appears in Collections:15 Fakultätsübergreifend / Sonstige Einrichtung

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