THEORETICAL-STUDY ON INTERMOLECULAR COUPLING IN A ONE-DIMENSIONAL C-60 POLYMER

The band structures of one-dimensional C-60 polymers are calculated us ing the self-consistent field crystal orbital method. Based on the cal culated band structures, the intermolecular electron-phonon coupling i n one-dimensional C-60 polymers is estimated by means of the mean-held approximation and the deformation potential theory. It is found that the intermolecular coupling is weak, being the same order of magnitude as those estimated in the alkali-metal doped three-dimensional C-60 c rystals. The influence of the coupling on the superconductivity and Pe ierl's phase transition is also discussed. (C) 1998 Elsevier Science L td. All rights reserved.