J. Phys. IV France 114 (2004) 73
Hall effect in the normal phase of the organic conductors: (TMTSF) 2ReO 4 vs. (TMTTF) 2AsF 6B. Korin-Hamzic1, 1, E. Tafra2, M. Basletic2, A. Hamzic1, L.-K. Montgomery3 and M. Dressel4
1 Institute of Physics, 10001 Zagreb, Croatia
2 Department of Physics, Faculty of Science, 10002 Zagreb, Croatia
3 Department of Chemistry, Indiana Univesity, Bloomington, USA
4 Physikalisches Institut, Universität Stuttgart, Germany
We report Hall effect measurements performed in the normal phase and at ambient pressure of (TMTSF) 2ReO 4 and (more anisotropic) (TMTTF) 2AsF 6 quasi-1D organic conductors. For T>200 K, the Hall coefficient of (TMTSF) 2ReO 4 is smoothly temperature-dependent, and its value corresponds to a carrier concentration of one hole/unit cell. On the other hand, the Hall coefficient of (TMTTF) 2AsF 6 is enhanced above 220 K, and the corresponding carrier concentration is almost 100 times lower than the expected one for one hole/unit cell. Our results give evidence for the existence of a high temperature regime above 200 K in (TMTTF) 2X salts, where the 1D Luttinger liquid features appear in the transport properties. Key words. Organic conductors, transport properties, magnetotransport.
© EDP Sciences 2004