Single electron charging in parallel coupled quantum dots

被引：18
|
作者：
Adourian, AS
Livermore, C
Westervelt, RM
Campman, KL
Gossard, AC
机构：
[1] HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138
[2] UNIV CALIF SANTA BARBARA,MAT DEPT,SANTA BARBARA,CA 93110
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1996年 / 20卷 / 03期
关键词：
D O I：
10.1006/spmi.1996.0097
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report low-temperature conductance measurements in the Coulomb blockade regime on two nominally identical tunnel-coupled quantum dots in parallel defined electrostatically in the two-dimensional electron gas of a GaAs/AlGaAs heterostructure. At low interdot tunnel coupling we find that the conductance measured through one dot is sensitive to the charge state of the neighboring dot. At larger interdot coupling the conductance data reflect the role of quantum charge fluctuations between the dots. As the interdot conductance approaches 2e(2)/h, the coupled dots behave as a single large dot. (C) 1996 Academic Press Limited
引用
收藏
页码：411 / 417
页数：7
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