The resistivity in metallic fullerenes

O. Gunnarsson and J.E. Han
Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany

We calculate the electrical resistivity due to electron-phonon scattering for a model of A3C60 (A= K, Rb), using an essentially exact quantum Monte-Carlo calculation. In agreement with experiment, we obtain exceptionally large metallic resistivities at large temperatures T. This illustrates that the apparent mean free path can be much shorter than the separation of the molecules. The calculation also explains the linear behavior in T at small T.

A reprint of this paper can be obtained from cond-mat in Germany or in the US

Nature 405 , 1027 (2000).

See also P.B. Allen: Misbehaviour in metals, in News and Views, Nature 405 , 1007 (2000), here given as a postscript or a pdf file.

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