Exchange interaction within a quantum dot strongly affects the transport through it in the Kondo regime. In a striking difference with the results of the conventional model, where this interaction is neglected, here the temperature and magnetic field dependence of the conductance may become non-monotonic: its initial increase follows by a drop when temperature and magnetic field are lowered.
@article{arxiv.cond-mat/0105155,
title = {Kondo effect in real quantum dots},
author = {M. Pustilnik and L. I. Glazman},
journal= {arXiv preprint arXiv:cond-mat/0105155},
year = {2007}
}