Influence of Coulomb Correlations on Nonequilibrium Quantum Transport in a Quadruple Quantum-Dot Structure

被引：0
作者：
M. Yu. Kagan
S. V. Aksenov
机构：
[1] Russian Academy of Sciences,Kapitza Institute for Physical Problems
[2] National Research University Higher School of Economics,Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch
[3] Russian Academy of Sciences,undefined
来源：
JETP Letters | 2018年 / 107卷
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摘要：
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 for 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.
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页码：493 / 499
页数：6
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