A simple, yet accurate solution of the electron-phonon coupling problem in C 60 is presented. The basic idea behind it is to be found in the parametrization of the ground state electronic density of the system calculated making use of ab-initio methods, in term of sp 2+x hybridized orbitals. This parametrization allows for an economic determination of the deformation potential associated with the fullerene's normal modes. The resulting electron-phonon coupling constants are used to calculate Jahn-Teller effects in C − 60 , and multiple satellite peaks in the corresponding photoemission reaction. Theory provides an accurate account of the experimental findings.

The electron-phonon coupling in fullerene C 28 has been calculated from first principles. The value of the associated coupling constant λ/N (0) is found to be a factor three larger than that associated with C 60 . Assuming similar values of the density of levels at the Fermi surface N(0) and of the Coulomb pseudopotential µ * for C 28 -based solids as those associated with alkali doped fullerides A 3 C 60 , one obtains T c (C 28 )≈8T c (C 60 )

No abstract