Optical near-field mapping of excitons and biexcitons in naturally occurring semiconductor quantum dots

被引：25
|
作者：
Hohenester, U
Goldoni, G
Molinari, E
机构：
[1] Karl Franzens Univ Graz, Inst Theoret Phys, A-8010 Graz, Austria
[2] Univ Modena & Reggio Emilia, INFMS3, I-41100 Modena, Italy
[3] Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy
来源：
APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 20期
关键词：
D O I：
10.1063/1.1741033
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We calculate the near-field optical spectra of excitons and biexcitons in semiconductor quantum dots naturally occurring at interface fluctuations in GaAs-based quantum wells, using a nonlocal description of the response function to a spatially modulated electromagnetic field. The relative intensity of the lowest, far-field forbidden excitonic states is predicted; the spatial extension of the ground biexciton state is found, in agreement with recently published experiments. (C) 2004 American Institute of Physics.
引用
收藏
页码：3963 / 3965
页数：3
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