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Applied Physics Letters / Volume 97 / Issue 9 / STRUCTURAL, MECHANICAL, THERMODYNAMIC, AND OPTICAL PROPERTIES OF CONDENSED MATTER

Appl. Phys. Lett. 97, 091905 (2010); http://dx.doi.org/10.1063/1.3485293 (3 pages)

Dielectric constant model for environmental effects on the exciton energies of single wall carbon nanotubes

A. R. T. Nugraha1, R. Saito1, K. Sato1, P. T. Araujo2, A. Jorio2, and M. S. Dresselhaus3

1Department of Physics, Tohoku University, Sendai 980-8578, Japan
2Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte 30123-970, Brazil
3Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA

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(Received 20 April 2010; accepted 29 July 2010; published online 1 September 2010)

The excitonic optical transition energies Eii of single wall carbon nanotubes, that are modified by surrounding materials around the tubes (known as the environmental effect), can be reproduced by defining a dielectric constant κ which depends on the subband index, nanotube diameter, and exciton size. The environmental effects on excitons can be recognized on a plot of the functional form of κ simply by the different linear slopes obtained for different samples. This treatment should be very useful for calculating Eii for any type of nanotube environment, hence providing an accurate assignment of many nanotube (n,m) chiralities.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

carbon nanotubes, excitons, permittivity

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3485293

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    C. D. Spataru, S. Ismail-Beigi, L. X. Benedict, and S. G. Louie, Phys. Rev. Lett. 92, 077402 (2004).

    C. Fantini, A. Jorio, M. Souza, M. S. Strano, M. S. Dresselhaus, and M. A. Pimenta, Phys. Rev. Lett. 93, 147406 (2004).

    P. T. Araujo, C. Fantini, M. M. Lucchese, M. S. Dresselhaus, and A. Jorio, Appl. Phys. Lett. 95, 261902 (2009)APPLAB000095000026261902000001.

    R. Saito, G. Dresselhaus, and M. S. Dresselhaus, Phys. Rev. B 61, 2981 (2000).

    K. Sato, R. Saito, J. Jiang, G. Dresselhaus, and M. S. Dresselhaus, Phys. Rev. B 76, 195446 (2007).

    P. T. Araujo, A. Jorio, M. S. Dresselhaus, K. Sato, and R. Saito, Phys. Rev. Lett. 103, 146802 (2009).

    V. Perebeinos, J. Tersoff, and P. Avouris, Phys. Rev. Lett. 92, 257402 (2004).


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