Two-Impurity Anderson-Kondo Model: first order Impurity-correlation
Mesoscale and Nanoscale Physics
2007-05-23 v1 Strongly Correlated Electrons
Abstract
We analyze the consequences of a first-order (in the effective Kondo coupling) inter-impurity correlation present in the Two-Impurity Anderson Hamiltonian. This correlation generates a pair of Kondo Doublet states which are responsible for the first (higher energy) Kondo stage of these systems. Applied to systems of quantum dots in a semiconductor heterolayer, these Doublets predict a mainly ferromagnetic dot-dot spin correlation which is different than the expected from the second-order RKKY interaction. In order to effectively screen both dots, a parallel alignment of the dot-spins is favored by the interaction.
Keywords
Cite
@article{arxiv.cond-mat/0510580,
title = {Two-Impurity Anderson-Kondo Model: first order Impurity-correlation},
author = {J. Simonin},
journal= {arXiv preprint arXiv:cond-mat/0510580},
year = {2007}
}
Comments
4 pages, 4 fig, 1 table