Metallic behaviour in highly conducting polymers

摘要: Abstract We give a brief review of transport data in highly conducting polymers and suggest specific microscopic macroscopic pictures that can account for the data. The conductivity temperature dependence new polyacetylene is generally consistent with combination Sheng's expression fluctuation-induced tunnelling anisotropic metallic conduction, maximum intrinsic exceeding 106 S/cm. Despite high conductivity, localization effects sometimes appear to occur at low temperatures: these could be due charging energy interchain transfer temperature, or quantum corrections as disordered metals. surprisingly linear thermopower observed argues against conduction models involving change number charge carriers temperature. It also indicates smaller interaction between electrons phonons than normal metals, which remarkably conductivities inferred.