OPTICAL CONDUCTIVITY OF POLYACETYLENE CHAINS

The optical conductivity of bond-disordered polyacetylene chains is ca lculated numerically and compared with results of an approximate analy tical theory. When the lattice fluctuations are considered as static b ond disorder and explicit Coulomb interactions are neglected, the cond uctivity tail inside the gap of pure polyacetylene comes out broader a nd the kink peak of doped polyacetylene comes out sharper than experim entally observed. Copyright (C) 1996 Elsevier Science Ltd