We demonstrate that the external irradiation brings decoherence in the spin states of the quantum dot. This effect cuts off the Kondo anomaly in conductance even at zero temperature. We evaluate the dependence of the DC conductance in the Kondo regime on the power of irradiation, this dependence being determined by the decoherence.
@article{arxiv.cond-mat/9903436,
title = {Suppression of Kondo effect in a quantum dot by external irradiation},
author = {A. Kaminski and Yu. V. Nazarov and L. I. Glazman},
journal= {arXiv preprint arXiv:cond-mat/9903436},
year = {2009}
}