Remarks on the Theory of Heavy-Fermion Superconductivity

Abstract

Heavy-Fermion superconductivity has been viewed by us theorists as a marvellous new area in which we could practice once more our celebrated skills in the standard theory of superconductivity. Many exotic and fascinating aspects of standard theory seemed to accumulate in Heavy-Fermion superconductors. Available data indicated unconventional pairing, strong Fermi-liquid effects, resonant impurity scattering, multi-band effects or other subtleties and needed support and explanation by theory. Now that most of us have quickly moved to a new field, it is fair to ask whether we have left the theory of Heavy-Fermion superconductivity well understood and under control.