%0 Journal Article
%T Universal subgap optical conductivity in quasi-one-dimensional Peierls systems
%A Kihong Kim
%A Ross H. McKenzie
%A John W. Wilkins
%J Physics
%D 1993
%I arXiv
%R 10.1103/PhysRevLett.71.4015
%X Quasi-one-dimensional Peierls systems with quantum and thermal lattice fluctuations can be modeled by a Dirac-type equation with a Gaussian-correlated off-diagonal disorder. A powerful new method gives the exact disorder-averaged Green function used to compute the optical conductivity. The strong subgap tail of the conductivity has a universal scaling form. The frequency and temperature dependence of the calculated spectrum agrees with experiments on KCP(Br) and trans-polyacetylene.
%U http://arxiv.org/abs/cond-mat/9311029v1