Effects of Coulomb Interaction on Superconductivity
In recent high-Tc oxide[l] and heavy-fermion superconductors, electron (or hole) correlations are important in understanding their mechanisms of superconductivity. At present, however, we have only a little knowledge about the effects of the Coulomb interaction on superconductivity. In the conventional theory, all the Coulomb effects are pushed into a single parameter μ*, called the Coulomb pseudo-potentialf4] which is regarded as a phenomenological parameter.
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