Neutral and charged excitons in a quantum tube

被引：5
|
作者：
Nomura, Shintaro
Tsumura, Kohel
机构：
[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan
[2] CREST JST, Kawaguchi, Japan
来源：
SURFACE SCIENCE | 2007年 / 601卷 / 02期
基金：
日本学术振兴会;
关键词：
Aharonov-Bohm effect; quantum tube; photoluminescence; charged exciton;
D O I：
10.1016/j.susc.2006.10.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The optical transition energies of neutral and charged excitons in a quantum tube are calculated as a function of the Aharonov-Bohm magnetic flux Phi. The oscillation amplitude of the ground state energy of the electron-hole relative motion is shown to be larger in a quantum tube than a quantum ring with strong confinement in the axis direction. We find a double maxima structure in the optical transition energy for a quantum tube with radius R = 0.5 in units of the effective Bohr radius because of the difference in the 0 dependencies between the single electron energy and the relative-motion energy of a charged exciton state. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：441 / 449
页数：9
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