COULOMB CHARGING OF A QUANTUM-DOT IN THE PRESENCE OF ADIABATICALLY TRANSMITTED EDGE CHANNELS

被引：6

作者：

ALPHENAAR, BW

STARING, AAM

VANHOUTEN, H

MARMORKOS, IK

BEENAKKER, CWJ

FOXON, CT

机构：

[1] PHILIPS RES LABS,EINDHOVEN,NETHERLANDS

[2] PHILIPS RES LABS,REDHILL RH1 5HA,SURREY,ENGLAND

[3] LEIDEN UNIV,INST LORENTZ,2300 RA LEIDEN,NETHERLANDS

来源：

PHYSICA B | 1993年 / 189卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(93)90148-Y

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present measurements of the conductance of a quantum dot in the presence of 2, 1 and 0 adiabatically transmitted edge channels. In all three cases periodic conductance oscillations are observed as a function of gate voltage. By using the oscillations observed in the absence of transmitted edge channels as an electron counter we demonstrate that the oscillations observed in the presence of transmitted edge channels are due to the influence of Coulomb charging. Using a simple model calculation we show that the activation energy for tunneling via an intermediate state in the confined edge channel oscillates periodically as a function of the Fermi energy, in qualitative agreement with the experiment.

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页码：80 / 87

页数：8

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