Abstract
Within the framework of a polar model, the possibility of rearranging the electronic structure of a narrow-energy-band crystal, with a sufficiently large quasi-Coulomb electron repulsion energy on different lattice sites, into a charge-ordered state (a state of maximum polarity) has been investigated. The spectra of current and currentless (exciton) excitations have been found to simple approximations and the high-frequency conductivity in the maximum-polarity state has also been calculated. The electric and magnetic properties of the solid in this state have been considered qualitatively and the possibility of its detection and study by experimental methods has been analysed.
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