Electronic mechanism of superconductivity in the cuprates, C-60, and polyacenes - art. no. 064511

On the basis of an analysis of theoretical and numerical studies of model s ystems and of experiments on superconductivity in doped C-60, polyacenes, a nd the cuprate high-temperature superconductors, we propose, that a purely electronic mechanism of superconductivity requires structures at an interme diate scale or mesoscale. Specifically, we address the crucial question of how high-temperature superconducting pairing on the mesoscale can arise fro m purely repulsive electronic interactions.