Magneto-tunnelling spectroscopy of single self-assembled InAs quantum dots in AlAs

被引：4
|
作者：
Thornton, ASG [1 ]
Ihn, T [1 ]
Main, PC [1 ]
Eaves, L [1 ]
Sheard, FW [1 ]
Henini, M [1 ]
机构：
[1] Univ Nottingham, Dept Phys, Nottingham NG7 2RD, England
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 1998年 / 2卷 / 1-4期
关键词：
magneto-tunnelling; InAs; quantum dots; spin splitting;
D O I：
10.1016/S1386-9477(98)00134-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We observe the spin splitting of a single InAs quantum dot using magneto-tunnelling spectroscopy. The current-voltage characteristics at low temperature are dominated by a Fermi edge singularity, caused by electron interaction effects. We obtain a value for the g-factor( = 0.82 +/- 0.09) for the quantum dot, with magnetic field applied in the plane of the dot. The magnetic field dependence of the amplitude of the tunnel current provides us with an estimate of the size of the quantum dot wave function (9 nm). (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：657 / 661
页数：5
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