ON THE THEORY OF COEXISTENT PHASE IN ANTIFERROMAGNETIC KONDO LATTICE
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Abstract
The ground state properties of the half-filled antiferromagnetic Kondo Lattice are discussed by using the static approximation of the functional integral method. Anti ferromagnetic phase and Kondo phase have been obtained in weak-coupling (J < 0.155) and strong-coupling (J > 0.345) regimes, respectively. A stable phase of coexistence of antiferromagnetism and Kondo effect exists in the intermediate-coupling regime (0.155 < J < 0.345) with Lower energy. The magnetic moments are reduced by Kondo effect in roexistent phase, as observed in experiments.
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