Abstract
To describe quantitatively the diverse variations of the temperature-dependent electrical conductivities of tetramethyltetraselenafulvenium (TMTSF) salts, a model based on small Fermi ( E f ) and small gap ( E g − E f ) energies and T − n dependence of scattering is presented. The difference between the conductivities of quenched and slowly cooled (TMTSF) 2ClO 4 is described by different values of E f and E g − E f in the two cases. The model illustrates, in terms of variables E f and E g − E f , the effect of pressure on the metal-insulator transition in (TMTSF) 2ReO 4, for example, and indicates a relation between E f and E g − E f at the onset of superconductivity.
Published Version
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