Superconductivity in molecular solids with Jahn-Teller phonons
  We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and establish the existence of novel physics which helps explain the unusually high superconducting transition temperatures in these systems. The Jahn-Teller phonons create a local (intramolecular) pairing that is surprisingly resistant to the Coulomb repulsion, despite the weakness of retardation in these low-bandwidth systems. The requirement for coherence throughout the solid to establish superconductivity then yields a very strong doping dependence to Tc, one consistent with experiment and much stronger than expected from standard Eliashberg theory. 
J.E. Han (1), O. Gunnarsson (2), and V.H. Crespi (1) ((1)Department of   Physics, The Pennsylvania State University, Univers...