JAHN-TELLER DISTORTION AND CORRELATION-EFFECTS IN FULLERENE MOLECULE

Electron-correlation effects in fullerene molecule are investigated in the framework of the Hubbard-Peierls model using the Gutzwiller appro ximate method. The influence of these effects on lattice distortions a nd pairing is studied. It is shown that the strongest pair-binding is realized for non-interacting case. Electron-electron interactions supp ress the tendency to Jahn-Teller distortion and destroy the pairing. O ur results provide strong evidence for the importance of Jahn-Teller d istortion in the pairing mechanism of superconductivity in alkali-dope d C-60.