Linear optical responses of one-dimensional electron systems: Comparison of theories with experiments

被引：0
|
作者：
Ogawa, Tetsuo [1 ,3 ]
Huai, Ping [1 ,3 ]
Takagiwa, Mutsuki [1 ,3 ]
Asano, Kenichi [1 ,3 ]
Ihara, Toshiyuki [2 ,3 ]
Yoshita, Masahiro [2 ,3 ]
Akiyama, Hidefumi [2 ,3 ]
机构：
[1] Osaka Univ, Dept Phys, Osaka 5600043, Japan
[2] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[3] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2008年 / 40卷 / 05期
关键词：
quantum wire; optical singularity; doping; many-body effects;
D O I：
10.1016/j.physe.2007.08.051
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present a systematic study on the linear optical spectra of n-doped GaAs quantum wire. A Coulomb-correlated band-edge absorption peak appears at low doping density evolving from the exciton resonance. The Fermi-edge singularity is observed at high doping density. Based on theoretical calculations, we clarify the mechanism of the crossover among exciton, the band-edge and the Fermi-edge singularities. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1288 / 1291
页数：4
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