Superconductivity of KxC60 fullerenes according to the Hubbard model with repulsion
Zaitsev R. O.
The electronic structure of the conduction band is analyzed in the limit of an infinitely high positive Hubbard energy. Partial scattering amplitudes are calculated. The results are used to determine the conditions for a Cooper instability. A phase diagram of the existence of the superconducting state is constructed.