ECRYS - 93
J. Phys. IV France 03 (1993) C2-369-C2-372
Interplay between disorder and quasi-regularity in CDW systemsI. BÂLDEA1, 2 and M. BADESCU3
1 Universität Ulm, Abteilung für Mathematische Physik, Oberer Eselsberg, Postfach 4066, 89069 Ulm/Donau, Germany
2 On leave from : Institute of Atomic Physics, IGSS, 76900 Bucharest-Màgurele, Romania
3 Passive Component Design, IPEE Electroarges, 12-14 Albesti Str., 0450 Curtea-de-Arges, Romania
We develop here a microscopical model of quasi-regular impurity distribution driven by the CDW appropriate for highly mobile impurities or materials with fictitious CDW transition temperature. Thermal hysteresis effects at the CDW transition reported in the quasi-1D materials NbSe3 and Ta2NiSe7, could be interpreted in the framework of the present model. Possible connections with other (alloy, heavy-fermion) systems are also suggested.
© EDP Sciences 1993