J. Phys. IV France 09 (1999) Pr10-263-Pr10-264
Conduction anisotropy of the Bechgaard saltsI. Kézsmárki1, F. Zámborszky1, L.K. Montgomery2 and G. Mihály1
1 Technical University of Budapest, Institute of Physics, Budapest, Hungary
2 University of Indiana, Department of Chemistry, Bloomington, U.S.A.
We report the results of a systematic study on the temperature dependence of the normal state conductivity, measured along the a, b', and c* axis, in a representative set of Bechgaard salts. The anisotropic electron transport of four compounds are compared : (TMTSF)2ClO4, (TMTSF)2PF6, (TMTTF)2Br and (TMTTF)2PF6. We analyze the tendency, following this order of the compounds, of the metallic ab' plane conductivity change to a semiconductor like behavior, and we discuss the mechanism of inter- and intra-chain transport. The c*-direction conduction is determined by the nature of the counter-ion and seems to be irrelevant in this comparison.
© EDP Sciences 1999