Transport in Coupled Quantum Dots: Kondo Effect Versus Anti-Ferromagnetic Correlation
Strongly Correlated Electrons
2009-10-31 v1 Mesoscale and Nanoscale Physics
Abstract
The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature is obtained by diagonalizing a cluster, composed by the double-dot and its vicinity, which is connected to leads. It is shown that the system goes continuously from the Kondo regime to an anti-ferromagnetic state as the inter-dot interaction is increased. The conductance, the charge at the dots and the spin-spin correlation are obtained as a function of the gate potential.
Keywords
Cite
@article{arxiv.cond-mat/9912019,
title = {Transport in Coupled Quantum Dots: Kondo Effect Versus Anti-Ferromagnetic Correlation},
author = {C. A. Büsser and E. V. Anda and A. L Lima and Maria A. Davidovich and G. Chiappe},
journal= {arXiv preprint arXiv:cond-mat/9912019},
year = {2009}
}
Comments
4 pages, 3 postscript figures. Submitted to PRL