Ground state magnetic properties of the symmetric periodic Anderson model with finite U

Abstract

Abstract For the symmetric periodic Anderson model at half-filling, we employ the multiple-slave-boson technique, suitable for finite local Coulomb repulsion, at the mean-field level and build in the antiferromagnetism by dividing the lattice into two sublattices. For the one-dimensional case, antiferromagnetism appears for large U. In infinite dimensions, the V-dependence of the Neel temperature is tongue-like, and antiferromagnetism is stable only when V is below a critical value. The magnetism appears to be local-moment-like for small V, but itinerant close to the critical V.