Superconductivity in fullerides.

Gunnarsson O.

Max-Planck-Institut für Festkörperforschung, Stuttgart.

Experimental studies of the superconductive properties of fullerides are briefly reviewed. Theoretical calculations of the electron-phonon coupling, in particular for the intramolecular phonons, are discussed extensively. The calculations are compared with coupling constants deduced from a number of different experimental techniques. It is discussed why A3C60 are not Mott-Hubbard insulators, in spite of the large Coulomb interaction. Estimates of the Coulomb pseudopotential mu *, describing the effect of the Coulomb repulsion on the superconductivity, as well as possible electronic mechanisms for the superconductivity, are reviewed. The calculation of various properties within the Migdal-Eliashberg theory and attempts to go beyond this theory are described. 

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

Reviews of Modern Physics, 69 575-606, 1997.

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