Family Effects on Excitons in Semiconducting Carbon Nanotubes

被引：22
作者：
Ando, Tsuneya [1 ]
机构：
[1] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2009年 / 78卷 / 10期
关键词：
carbon nanotube; Aharonov-Bohm effect; exciton; effective-mass theory; trigonal warping; curvature; lattice distortion; OPTICAL-TRANSITION ENERGIES; BAND-STRUCTURE; ELECTRONIC-STRUCTURE; DEPENDENCE; TRANSPORT; DIAMETER; BEHAVIOR; STATES;
D O I：
10.1143/JPSJ.78.104703
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Family behavior of excitons is studied in carbon nanotubes based on a k center dot p scheme. Effects responsible for family pattern are characterized by two parameters beta representing higher-order terms in the effective Hamiltonian responsible for trigonal warping and p representing amount of effective flux due to curvature and lattice distortion. These parameters are determined through comparison with empirical formula of the lowest exciton and experiments of two-photon absorption giving excited exciton states. The observed family pattern can be reproduced much better for the first gap than for the second gap.
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页数：9
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