Possible new coherence effects in condensed systems with repulsive interactions

A possible new mechanism for high temperature superconductivity is proposed. A system of electrons and nuclei is shown to rearrange into two or more clusters, leading to a conformational stabilization with strong repulsive interactions and very sensitive dependence on the exchange energy. The basic group of electrons are quads. Some remarkable electromagnetic properties of certain AlCAl junctions and anomalous diamagnetic properties of CuCl are suggested to be realizations of our model.