Dynamical Mean Field Theory of the Antiferromagnetic Metal to Antiferromagnetic Insulator Transition

Details Dynamical Mean Field Theory of the Antiferromagnetic Metal to Antiferromagnetic Insulator Transition Dynamical Mean Field Theory of the Antiferromagnetic Metal to Antiferromagnetic Insulator Transition

1998-11-11

arxiv.org/abs/cond-mat/9811144v2

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, uses epsfig,4 figures,notational errors rectified

Scientific paper

10.1103/PhysRevLett.83.2386

We study the antiferromagnetic metal to antiferromagnetic insulator using dynamical mean field theory and exact diagonalization methods. We find two qualitatively different behaviors depending on the degree of magnetic correlations. For strong correlations combined with magnetic frustration, the transition can be described in terms of a renormalized slater theory, with a continuous gap closure driven by the magnetism but strongly renormalized by correlations. For weak magnetic correlations, the transition is weakly first order.

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