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The RKKY interactions and the Mott Transition

G. Moeller·V. Dobrosavljevic·A. E. Ruckenstein
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Abstract

A two-site cluster generalization of the Hubbard model in large dimensions is examined in order to study the role of short-range spin correlations near the metal-insulator transition (MIT). The model is mapped to a two-impurity Kondo-Anderson model in a self-consistently determined bath, making it possible to directly address the competition between the Kondo effect and RKKY interactions in a lattice context. Our results indicate that the RKKY interactions lead to qualitative modifications of the MIT scenario even in the absence of long range antiferromagnetic ordering.

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G. Moeller, V. Dobrosavljevic, A. E. Ruckenstein. 1998-12-11. The RKKY interactions and the Mott Transition. https://doi.org/10.1103/physrevb.59.6846

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