Zero-temperature magnetism in the periodic Anderson model in the limit of large dimensions

Details Zero-temperature magnetism in the periodic Anderson model in the limit of large dimensions Zero-temperature magnetism in the periodic Anderson model in the limit of large dimensions

1995-07-04

arxiv.org/abs/cond-mat/9507006v1

Physics

Condensed Matter

9 pages + 9 figures, to appear in Phys. Rev. B, 1 Sept. 1995 issue

Scientific paper

10.1103/PhysRevB.52.7369

We study the magnetism in the periodic Anderson model in the limit of large dimensions by mapping the lattice problem into an equivalent local impurity self-consistent model. Through a recently introduced algorithm based on the exact diagonalization of an effective cluster hamiltonian, we obtain solutions with and without magnetic order in the half-filled case. We find the exact AFM-PM phase boundary which is shown to be of $2^{nd}$ order and obeys $\frac{V^2}{U} \approx const.$ We calculate the local staggered moments and the density of states to gain insights on the behavior of the AFM state as it evolves from itinerant to a local-moment magnetic regime

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