Magnetic field effects in InP self-assembled quantum dots

被引：17
|
作者：
Sugisaki, M
Ren, HW
Nishi, K
Sugou, S
Okuno, T
Masumoto, Y
机构：
[1] Tsukuba Res Consortium, JST, ERATO, Single Quantum Dot Project, Ibaraki, Osaka 3002635, Japan
[2] NEC Corp Ltd, Optoelect & High Frequency Device Res Labs, Ibaraki, Osaka 3058501, Japan
[3] Univ Tsukuba, Inst Phys, Ibaraki, Osaka 3058571, Japan
来源：
PHYSICA B-CONDENSED MATTER | 1998年 / 256卷
关键词：
self-assembled quantum dot; single quantum dot spectroscopy; diamagnetic shift; Zeeman splitting;
D O I：
10.1016/S0921-4526(98)00675-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Optical properties of InP self-assembled quantum dots (SADs) were investigated in the presence of a magnetic field up to 10 T. By using a mu m-sized InP/GaInP mesa, we succeeded in observing sharp photoluminescence (PL) lines from a single InP quantum dot. With the increase of the magnetic field, the diamagnetic shift and the Zeeman splitting were clearly observed in the Faraday configuration. The diamagnetic coefficient and the effective g-value of the confined excitons show fluctuations reflecting dispersion in the size and the shape of the quantum dots. The estimated g-value of the InP quantum dot is about half of that of the bulk InP because of the heavy-hole light-hole band mixing. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：169 / 172
页数：4
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