Abstract

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 NbSe 3 and Ta 2 NiSe 7 could be interpretetd in the framework of the present model. Possible connections with other (alloy, heavy-fermion) systems are also suggested

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