Two-electron bunching in transport through a QD induced by Kondo correlations
Mesoscale and Nanoscale Physics
2009-11-13 v1
Abstract
We report on noise measurements in a quantum dot in the presence of Kondo correlations. Close to the unitary limit, with the conductance reaching 1.8e2/h, we observed an average backscattered charge of e*~5e/3, while weakly biasing the quantum dot. This result held to bias voltages up to half the Kondo temperature. Away from the unitary limit, the charge was measured to be e as expected. These results confirm and extend the prediction by E. Sela et al. [1], that suggested that two-electron backscattering processes dominate over single-electron backscattering processes near the unitary limit, with an average backscattered charge e*~5e/3.
Cite
@article{arxiv.0711.4552,
title = {Two-electron bunching in transport through a QD induced by Kondo correlations},
author = {O. Zarchin and M. Zaffalon and M. Heiblum and D. Mahalu and V. Umansky},
journal= {arXiv preprint arXiv:0711.4552},
year = {2009}
}