Excitonic polarons in quasi-two-dimensional structures

被引：10
|
作者：
Thilagam, A
Singh, J
机构：
[1] Faculty of Science, Northern Territory University, Darwin
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1996年 / 62卷 / 05期
关键词：
D O I：
10.1007/BF01567115
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A theory of excitonic polarons in semiconductor quantum wells is presented. Using a unitary transformation, we have diagonalized the exciton-phonon interaction operator in a quasi-two-dimensional system partially and then calculated the ground-state energy of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron. We have numerically evaluated the energy gap shift and effective mass of an excitonic polaron in GaAs-AlxGa1-xAs systems. The results obtained here indicate that the polaronic effect is significant in the case of the light hole excitons in quantum wells of small well widths.
引用
收藏
页码：445 / 450
页数：6
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