Excitonic effects and optical spectra of single-walled carbon nanotubes

被引：802

作者：

Spataru, CD ^{[1
]}

Ismail-Beigi, S

Benedict, LX

Louie, SG

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Lawrence Livermore Natl Lab, Phys & Adv Technol Directorate, Div H, Livermore, CA 94550 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.077402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Many-electron effects often dramatically modify the properties of reduced dimensional systems. We report calculations, based on an ab initio many-electron Green's function approach, of electron-hole interaction effects on the optical spectra of small-diameter single-walled carbon nanotubes. Excitonic effects qualitatively alter the optical spectra of both semiconducting and metallic tubes. Excitons are bound by similar to1 eV in the semiconducting (8,0) tube and by similar to100 meV in the metallic (3,3) tube. These large many-electron effects explain the discrepancies between previous theories and experiments.

引用

页数：4

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