Transport through a quantum dot with two parallel Luttinger liquid leads

被引：9

作者：

Elste, Florian ^{[1
]}

Reichman, David R. ^{[2
]}

Millis, Andrew J. ^{[1
]}

机构：

[1] Columbia Univ, Dept Phys, New York, NY 10027 USA

[2] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 24期

基金：

美国国家科学基金会;

关键词：

MODEL;

D O I：

10.1103/PhysRevB.83.245405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study transport through a quantum dot side-coupled to two parallel Luttinger liquid leads in the presence of a Coulombic dot-lead interaction. This geometry enables an exact treatment of the interlead Coulomb interactions. We find that for dots symmetrically disposed between the two leads the correlation of charge fluctuations between the two leads can lead to an enhancement of the current at the Coulomb-blockade edge and even to a negative differential conductance. Moving the dot off center or separating the wires further converts the enhancement to a suppression.

引用

页数：6

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