par Thomas, Jean-Michel ;Jerome, Denis
Référence Solid state communications, 36, 9, page (813-816)
Publication Publié, 1980-12
Article révisé par les pairs
Résumé : We report the pressure dependence of the phase transition in TSF-TCNQ as determined by resistivity measurements. We find a narrow pressure domain centered on 6.25 kbar where the transition temperature peaks above a monotonous pressure dependence. We suggest that there is a commensurate × 3 superlattice in this pressure regime resulting from an increase in charge transfer from 0.63 under ambient pressure to 2 3. A drop of longitudinal conductivity related to the × 3 commensurability is visible in the same temperature region where X-ray diffuse scattering data show 1-D features for the precursor fluctuations. We suggest that like TTF-TCNQ, the metallic conductivity of TSF-TCNQ is also influenced by the fluctuating Fröhlich mode. © 1980.