Electron-phonon interaction in C-70

The matrix elements of the deformation potential of C-70 are calculated by means of a simple, yet accurate solution of the electron-phonon coupling pr oblem in fullerenes, based on a parametrization of the ground-state electro nic density of the system in terms of sp(2+x) hybridized orbitals. The valu e of the calculated dimensionless total electron-phonon coupling constant i s lambda approximate to 0.1, an order of magnitude smaller than in C-60, co nsistent with the lack of a superconducting phase transition in C(70)A(3) f ullerite, and in overall agreement with measurements of the broadening of R aman peaks in C70K4 We also calculate the photoemission cross section of C- 70(-) which is found to display less structure than that associated with C- 60(-), in overall agreement with the experimental findings.