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

被引：8

作者：

Kagan, M. Yu. ^{[1
,2
]}

Aksenov, S. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Kapitza Inst Phys Problems, Moscow 119334, Russia

[2] Natl Res Univ Higher Sch Econ, Moscow 101000, Russia

[3] Russian Acad Sci, Siberian Branch, Fed Res Ctr KSC, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

来源：

JETP LETTERS | 2018年 / 107卷 / 08期

基金：

俄罗斯基础研究基金会;

关键词：

SPIN; STATES;

D O I：

10.1134/S0021364018080027

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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.

引用

页码：493 / 499

页数：7

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