Excitons in carbon nanotubes: Diameter and chirality trends

被引：33

作者：

Capaz, Rodrigo B.

Spataru, Catalin D.

Ismail-Beigi, Sohrab

Louie, Steven G.

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941 Rio De Janeiro, Brazil

[2] Normalizacao Qualidade Ind, Inst Nacl Metrol, Div Metrol Mat, BR-25245 Duque De Caxias, Brazil

[3] Columbia Univ, Ctr Electron Transport Mol Nanostruct, Ctr Integrated Sci & Engn, New York, NY 10027 USA

[4] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA

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

[6] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2007年 / 244卷 / 11期

关键词：

D O I：

10.1002/pssb.200776200

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We provide a closer look into the diameter and chirality dependences of exciton proper-ties in carbon nanotubes, using a variational methodology based on the effective mass and envelope function approximations, supported by ab initio parameters. Experimental measurements of the binding energy are reproduced within 0.02 eV for a large variety of tubes. We also report on the singlet-triplet energy splittings, which show a 1/d(2) diameter dependence. (c) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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收藏

页码：4016 / 4020

页数：5

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