Superconductivity in charge Kondo systems

I will present a theory of superconductivity in charge Kondo systems, materials with resonant quantum valence fluctuations, in the regime where the transition temperature is comparable to the charge Kondo resonance. I will discuss superconductivity induced by charge Kondo impurities, study how pairing of a superconducting host is enhanced due to charge Kondo centers and investigate the interplay between Kondo-scattering and inter-impurity Josephson coupling. I also will discuss the implications of above mentioned theory for Tl-doped PbTe, which has recently been identified as a candidate charge Kondo system.