High Temperature Superconductors, RVB, and Conducting Polymers

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Abstract
There is a strong analogy between the resonating-valance-bond (RVB) theory of high temperature superconductivity and the theory of doped conducting polymers. We have computed the properties of the one-dimensional electron-gas with repulsive electronelectron interactions and attractive interactions mediated by electron-phonon coupling. For the nearly half-filled band we find that the repulsive interactions strongly enhance the tendency for superconductivity. Finally, we discuss the implications of our results in terms of strategies for producing highly conducting metallic, or superconducting polymers.