Some peculiarities of the temperature dependence of the electronic conductivity in charge-ordered crystals

A system of localized electrons capable of passing into the charge-ordered state is found to modify substantially the properties of crystals. In the calculations the finite compressibility of the crystals is taken into account. The lattice parameters are shown to vary under definite conditions, giving rise to a temperature dependence of the electron conductivity differing from that observed in metals. For properly chosen compounds this effect can amount to tens of percents. [Russian Text Ignored].