Kondo effect in complex mesoscopic structures
Mesoscale and Nanoscale Physics
2009-11-10 v2 Strongly Correlated Electrons
Abstract
We study the Kondo effect of a quantum dot placed in a complex mesoscopic structure. Assuming that electronic interactions are taking place solely on the dot, and focusing on the infinite Hubbard interaction limit, we use a decoupling scheme to obtain an explicit analytic approximate expression for the dot Green function, which fulfills certain Fermi-liquid relations at zero temperature. The details of the complex structure enter into this expression only via the self-energy for the non-interacting case. The effectiveness of the expression is demonstrated for the single impurity Anderson model and for the T-shaped network.
Cite
@article{arxiv.cond-mat/0406453,
title = {Kondo effect in complex mesoscopic structures},
author = {O. Entin-Wohlman and A. Aharony and Y. Meir},
journal= {arXiv preprint arXiv:cond-mat/0406453},
year = {2009}
}
Comments
12 pages 6 figures