RKKY interactions and the Mott transition
Files
Accepted manuscript
Date
1999-03-01
Authors
Moeller, G.
Dobrosavljevic, V.
Ruckenstein, A. E.
Version
Accepted manuscript
OA Version
Citation
G. Moeller, V. Dobrosavljevic, A.E. Ruckenstein. 1999. "RKKY interactions and the Mott transition." PHYSICAL REVIEW B, Volume 59, Issue 10, pp. 6846 - 6854 (9). 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.