Edge-state blockade of transport in quantum dot arrays

被引：16

作者：

Benito, Monica ^{[1
]}

Niklas, Michael ^{[2
]}

Platero, Gloria ^{[1
]}

Kohler, Sigmund ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, Plaza Murillo 2, E-28049 Madrid, Spain

[2] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 11期

关键词：

PHASE; BANDS;

D O I：

10.1103/PhysRevB.93.115432

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose a transport blockade mechanism in quantum dot arrays and conducting molecules based on an interplay of Coulomb repulsion and the formation of edge states. As a modelwe employ a dimer chain that exhibits a topological phase transition. The connection to a strongly biased electron source and drain enables transport. We show that the related emergence of edge states is manifest in the shot noise properties as it is accompanied by a crossover from bunched electron transport to a Poissonian process. For both regions we develop a scenario that can be captured by a rate equation. The resulting analytical expressions for the Fano factor agree well with the numerical solution of a full quantum master equation.

引用

页数：7

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