MODEL OF HIGH-T-C SUPERCONDUCTIVITY IN LOW-COORDINATION SEMICONDUCTORS AND POLYMERS

We propose a model in which the state with anomalously high conductivi ty observed in some low-coordinated semiconductors and polymers when t he temperature of the surrounding medium is T-0 approximate to 300 K, is described by the theory of the superconducting properties of a syst em of localized electron pairs. The superconducting properties of the model are determined by transport along a bipolaron band formed by loc alized pairs of carriers belonging to U- centers, i.e., intrinsic defe cts with a negative effective correlation energy. (C) 1998 American In stitute of Physics. [S1063-7850(98)00704-6].