We study the optical conductivity in A3C60 (A =K, Rb). The effects of the electron-phonon interaction is included to lowest order in the coupling strength lambda. It is shown that this leads to a narrowing of the Drude peak by a factor 1+lambda and a transfer of weight to a mid-infrared peak at somewhat larger energies than the phonon energy. Although this goes in the right direction, it is not sufficient to describe experiment.
@article{arxiv.cond-mat/9703186,
title = {Optical conductivity in A3C60 (A=K, Rb)},
author = {J. van den Brink and Olle Gunnarsson and V. Eyert},
journal= {arXiv preprint arXiv:cond-mat/9703186},
year = {2009}
}
Comments
5 pages, revtex, 2 figures more information at http://librix.mpi-stuttgart.mpg.de/docs/ANDERSEN/fullerene/