Superfluid state in the periodic Anderson model with attractive interactions

Abstract

We investigate the periodic Anderson model with attractive interactions by means of dynamical mean-field theory (DMFT). Using a continuous-time quantum Monte Carlo impurity solver, we study the competition between the superfluid state and the paramagnetic Kondo insulating state, and determine the phase diagram. At the chemical potential-induced phase transition from the Kondo insulating state to the superfluid state, a low-energy peak characteristic of the superfluid state appears inside the hybridization gap. We also address the effect of the confining potential in optical lattice systems by means of real-space DMFT calculations.

16 pages, 8 figures

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• Mott transitions in the Hubbard model with spatially-modulated interactions
• Valence Fluctuations in the Extended Anderson Lattice Model with Quasiperiodicity
• s- and d-wave superconductivity in a two-band model
• Universal scaling in the Knight shift anomaly of doped periodic Anderson model
• Influence of the symmetry of the hybridization on the critical temperature of multi-band superconductors
• Charge Kondo Effect and Superconductivity in the Falikov-Kimball model with the Pair Hopping
• Evolution of the Andreev bands in the half-filled superconducting periodic Anderson model