Superfluid state in the periodic Anderson model with attractive interactions

Abstract

We investigate the periodic Anderson model with attractive interactions. By combining dynamical mean-field theory (DMFT) with a continuous-time quantum Monte Carlo impurity solver, we study the competition between the superfluid state and the paramagnetic Kondo insulating state. It is found that both the particle and hole doping of the Kondo insulating state yields a phase transition to the superfluid state, and induces low energy in-gap states in the density of states. The phase diagram of the model is determined.