BCS RATIOS FOR ALKALI-DOPED FULLERENE SUPERCONDUCTORS

The ratios between the energy gap and T-c and between the jump in spec ific heat at T-c and the normal phase specific heat for doped fulleren e superconductors are calculated within the framework of the two peak model in which the electrons are coupled to both the high intramolecul ar vibration mode (Hg(8) mode) and a low lying intermolecular vibratio n mode. It is shown that the deviation of the ratios from the BCS valu es is due mainly to coupling to the low lying mode. If there is coupli ng to the high intramolecular vibration modes only, the ratios would h ave the BCS values.