Single-electron charging and coulomb interaction in InAs self-assembled quantum dot arrays

被引：110
|
作者：
MedeirosRibeiro, G
Pikus, FG
Petroff, PM
Efros, AL
机构：
[1] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106
[2] UNIV UTAH,DEPT PHYS,SALT LAKE CITY,UT 84112
来源：
PHYSICAL REVIEW B | 1997年 / 55卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevB.55.1568
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sequential single-electron charging is observed in InAs self-assembled quantum dots using capacitance spectroscopy. In this system, the Coulomb energy is smaller than the interlevel energy spacings due to the quantum confinement and both effects can be separately identified. A theoretical model is proposed for this system and the capacitance experiments were devised in order to experimentally observe the effects of Coulomb interaction between electrons on the dots. The effects of inter- and intradot Coulomb interaction have been observed in the capacitance spectra. A good agreement between the proposed model and experiment is achieved.
引用
收藏
页码：1568 / 1573
页数：6
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