Asymptotic exchange coupling of quasi-one-dimensional excitons in carbon nanotubes

被引：28

作者：

Bondarev, I. V. ^{[1
]}

机构：

[1] N Carolina Cent Univ, Dept Phys, Durham, NC 27707 USA

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 15期

基金：

美国国家科学基金会;

关键词：

ABSORPTION; ULTRALONG;

D O I：

10.1103/PhysRevB.83.153409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analytical expression is obtained for the biexciton binding energy as a function of the interexciton distance and binding energy of constituent quasi-one-dimensional excitons in carbon nanotubes. This allows one to trace biexciton energy variation and relevant nonlinear absorption under external conditions whereby the exciton binding energy varies. The nonlinear absorption line shapes calculated exhibit characteristic asymmetric (Rabi) splitting as the exciton energy is tuned to the nearest interband plasmon resonance. These results are useful for tunable optoelectronic device applications of optically excited semiconducting carbon nanotubes, including the strong excitation regime with optical nonlinearities.

引用

页数：4

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