Experimental evidence for Coulomb charging effects in an open quantum dot at zero magnetic field

被引：48

作者：

Liang, CT ^{[1
]}

Simmons, MY ^{[1
]}

Smith, CG ^{[1
]}

Kim, GH ^{[1
]}

Ritchie, DA ^{[1
]}

Pepper, M ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.81.3507

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the low-temperature transport properties of an open quantum dot formed in a clean one-dimensional channel. For the first time, at zero magnetic field, continuous and periodic oscillations superimposed upon ballistic conductance steps are observed when the conductance through the dot G exceeds 2e(2)/h. We ascribe the observed conductance oscillations to evidence for Coulomb charging effects in an open dot. This is supported by the evolution of the oscillating features for G > 2e(2)/h as a function of both temperature and barrier transparency.

引用

页码：3507 / 3510

页数：4

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