Magnetoluminescence studies of InyAl1-yAs self-assembled quantum dots in AlxGa1-xAs matrices

被引：79

作者：

Wang, PD

Merz, JL

Fafard, S

Leon, R

Leonard, D

MEdeirosRibeiro, G

Oestreich, M

Petroff, PM

Uchida, K

Miura, N

Akiyama, H

Sakaki, H

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT MAT,CTR QUANTIZED ELECT STRUCT,SANTA BARBARA,CA 93106

[2] UNIV CALIF SANTA BARBARA,DEPT ELECT & COMP ENGN,SANTA BARBARA,CA 93106

[3] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

[4] UNIV TOKYO,ADV SCI & TECHNOL RES CTR,MEGURO KU,TOKYO,JAPAN

[5] RES DEV CORP JAPAN,QUANTUM TRANSIT PROJECT,MEGURO KU,TOKYO,JAPAN

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.53.16458

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the photoluminescence spectra of InyAl1-yAs self-assembled quantum dots in AlxGa1-xAs matrices with magnetic fields up to B = 40 T. The quantum dot structure is pseudomorphically grown by molecular-beam epitaxy on (100) GaAs substrates. From the analysis of the diamagnetic shift of the magnetoluminescence spectra, we estimate the total lateral electron and hole confinement energy to be 43 meV. The exciton radius is deduced as 5 nm. The exciton binding energy in such a quantum dot system is estimated to be similar to 31 meV based on trial wave-function calculations of the actual dot system.

引用

页码：16458 / 16461

页数：4

共 23 条

[1] COULOMB ATTRACTION IN THE OPTICAL-SPECTRA OF QUANTUM DISKS [J].