Strongly enhanced shot noise in chains of quantum dots

被引：15

作者：

Aghassia, Jasmin ^{[1
]}

Thielmann, Axel

Hettler, Matthias H.

Schoen, Gerd

机构：

[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] Univ Karlsruhe, Inst Theoret Festkorperphys, D-76128 Karlsruhe, Germany

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 05期

关键词：

D O I：

10.1063/1.2260827

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors study charge transport through a chain of quantum dots. The dots are fully coherent among each other and weakly coupled to metallic electrodes. If the Coulomb interaction dominates over the interdot hopping the authors find strongly enhanced shot noise at biases above the sequential tunneling threshold, with an enhancement which can easily reach a factor of similar to 100. This strong enhancement may allow direct experimental detection of shot noise, e.g., in a chain of quantum dots formed in semiconductor heterostructures. The current is not enhanced in the region of enhanced noise, thus rendering the shot noise super-Poissonian. (c) 2006 American Institute of Physics.

引用

页数：3

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