O. Gunnarsson and J.E. Han
Max-Planck-Institut für Festkörperforschung, 70569 Stuttgart,
Germany
We calculate the electrical resistivity due to electron-phonon scattering
for a model of A_{3}C_{60} (A= K, Rb), using an essentially
exact quantum Monte-Carlo method. In agreement with experiment, we obtain
a very large metallic resistivity at large temperatures T.
This illustrates that the apparent mean free path can be much shorter than
the separation of the molecules. An interpretation of this result is given.
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