COMPARISON OF THE QUANTUM-CONFINED STARK-EFFECT FOR (100)A-ORIENTED AND (311)A-ORIENTED GAAS/ALGAAS QUANTUM-WELLS USING ELECTROREFLECTANCE SPECTROSCOPY

被引：2
|
作者：
GOLDHAHN, R
SHOKHOVETS, S
GOBSCH, G
NAKOV, V
HENINI, M
HILL, G
机构：
[1] UNIV NOTTINGHAM, DEPT PHYS, NOTTINGHAM NG7 2RD, ENGLAND
[2] UNIV SHEFFIELD, DEPT ELECTR ENGN, SHEFFIELD S1 3JD, S YORKSHIRE, ENGLAND
[3] BELARUS STATE POLYTECH ACAD, MINSK 220027, BELARUS
来源：
SUPERLATTICES AND MICROSTRUCTURES | 1995年 / 17卷 / 04期
关键词：
D O I：
10.1006/spmi.1995.1070
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The excitonic subband transitions of (100)- and (311)A-oriented GaAs/AlGaAs single quantum wells (SQW's) are investigated using electroreflectance spectroscopy. The strong Franz-Keldysh-Oscillations arising from the undoped AlGaAs barrier layers are analyzed to determine the field strength within the SQW's directly from the measurements with high accuracy. Both, the orientation-dependent splitting between the first heavy and light hole subbands and their field-induced shifts are compared with the results of k . p calculations. Best agreement between experiment and theory is obtained for a set of Luttinger parameters corresponding to heavy and light hole masses of 0.55m(0) and 0.084m(0), respectively, along the [311] direction. (C) 1995 Academic Press Limited
引用
收藏
页码：401 / 405
页数：5
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