Theory of a quasi-one-dimensional band-conductor

Abstract

Following the very recent experiments on the Pt-complex based one-dimensional (1- d) conductors we present a microscopic theory of a 1- d band conductor which explicitly shows how the giant Kohn anomaly in a higher-temperature metallic state can be the precursor of a second-order phase transition to a lower-temperature insulating phase, the electronic energy gap of which is of the BCS type.