The influence of Coulomb correlations on nonequilibrium quantum transport in quadruple quantum-dot structure
Mesoscale and Nanoscale Physics
2018-05-29 v2
Abstract
The description of quantum transport in a quadruple quantum-dot structure (QQD) is proposed taking into account the Coulomb correlations and nonzero bias voltages. To achieve this goal the combination of nonequilibrium Green's functions and equation-of-motion technique is used. It is shown that the anisotropy of kinetic processes in the QQD leads to negative differential conductance (NDC). The reason of the effect is an interplay of the Fano resonances which are induced by the interdot Coulomb correlations. Different ways to increase the peak-to-valley ratio related to the observed NDC are discussed.
Keywords
Cite
@article{arxiv.1803.05185,
title = {The influence of Coulomb correlations on nonequilibrium quantum transport in quadruple quantum-dot structure},
author = {M. Yu. Kagan and S. V. Aksenov},
journal= {arXiv preprint arXiv:1803.05185},
year = {2018}
}
Comments
13 pages, 4 figures