Macroscopic quantum state and high-temperature superconductivity in semi-localized 2D electron system with circular molecular orbits

Recently new type of high temperature superconductors is found which are characterized by the existence of circular molecular orbits in each unit site of of 2D s/p electron system. In view of the characteristic, a new model og superfluidity is studied based on the coherent state where the zero-point oscillation of toroidal wave function causes a macroscopic quantum state. This model gives an estimation of the superfluidity transition temperature: Tc approx 52-117 K for fcc C60, and Tc approx 50-150 K for hole-doped MgB2