RKKY interactions and the Mott transition

Goetz Moeller, V. Dobrosavljević, Andrei E. Ruckenstein

Type: Article

Publication Date: 1999-03-01

Citations: 40

DOI: https://doi.org/10.1103/physrevb.59.6846

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 Ruderman-Kittel-Kasuya-Yosida (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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Physical review. B, Condensed matter - View
arXiv (Cornell University) - View - PDF
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