The RKKY interactions and the Mott Transition
Strongly Correlated Electrons
2009-10-31 v1 Statistical Mechanics
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.
Keywords
Cite
@article{arxiv.cond-mat/9812185,
title = {The RKKY interactions and the Mott Transition},
author = {G. Moeller and V. Dobrosavljevic and A. E. Ruckenstein},
journal= {arXiv preprint arXiv:cond-mat/9812185},
year = {2009}
}
Comments
10 pages, 10 figures; to appear in Phys. Rev. B (1999)