Electron-phonon interaction

The matrix elements of the deformation potential of (Formula presented) are calculated by means of a simple, yet accurate solution of the electron-phonon coupling problem in fullerenes, based on a parametrization of the ground-state electronic density of the system in terms of (Formula presented) hybridized orbitals. The value of the calculated dimensionless total electron-phonon coupling constant is (Formula presented) an order of magnitude smaller than in (Formula presented) consistent with the lack of a superconducting phase transition in (Formula presented) fullerite, and in overall agreement with measurements of the broadening of Raman peaks in (Formula presented) We also calculate the photoemission cross section of (Formula presented) which is found to display less structure than that associated with (Formula presented) in overall agreement with the experimental findings. © 2000 The American Physical Society.