Transport through a quantum dot with excitonic dot-lead coupling

被引：11

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 / 08期

基金：

美国国家科学基金会;

关键词：

LUTTINGER LIQUID; STATES; SINGULARITY; IMPURITIES; DIMENSION; DENSITY; MODEL; GAS;

D O I：

10.1103/PhysRevB.83.085415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the effect of a dot-lead interaction on transport through a quantum dot hybridized to two semi-infinite Luttinger-liquid leads. A bosonization approach is applied to treat the interaction between charge fluctuations on the dot and the dynamically generated image charge in the leads. The nonequilibrium distribution function of the dot and the tunneling current are computed within a master-equation approach. The presence of the excitonic dot-lead coupling is found to enhance transport in the vicinity of the Coulomb-blockade threshold. This behavior is in contrast to the usual power-law suppression of electronic tunneling that is found if this interaction is ignored.

引用

页数：8

共 22 条

[1] Exact low-temperature results for transport properties of the interacting resonant level model [J].