Coulomb-modified Fano resonance in a one-lead quantum dot

被引：229

作者：

Johnson, AC ^{[1
]}

Marcus, CM

Hanson, MP

Gossard, AC

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.106803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate a tunable Fano interferometer consisting of a quantum dot coupled via tunneling to a one-dimensional channel. In addition to Fano resonance, the channel shows strong Coulomb response to the dot, with a single electron modulating channel conductance by factors up to 100. Where these effects coexist, line shapes with up to four extrema are found. A model of Coulomb-modified Fano resonance is developed and gives excellent agreement with experiment.

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页码：106803 / 1

页数：4

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