Theoretically predicted Drude absorption by a conducting charged soliton in doped polyacetylene

Abstract

Publisher Summary This chapter presents theoretically predicted drude absorption by a conducting charged soliton in doped-polyacetylene. A recent development of considerable interest has been the report by the Penn group of a range of dopant concentration for which the homogeneously doped polymer exhibits metallic conductivity with an essentially zero Pauli spin susceptibility. This band is a consequence of the coupling of the internal and translational motions of the soliton that endows the mobile charged soliton with an oscillating electric dipole moment proportional to its mean velocity of translation. The relatively small value of k/2 for (CH) x implies that the bond alternation amplitude of nature's simplest polymer has the character of a quantum field. The relevance of the quantum field theory literature to the present problem is therefore called to attention.