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Open Physics

formerly Central European Journal of Physics

Editor-in-Chief: Seidel, Sally

Managing Editor: Lesna-Szreter, Paulina

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Volume 6, Issue 4

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A symmetry based investigation of the band gap of SWCNTs

Mehdi Pakkhesal / Rahim Ghayour
Published Online: 2008-09-27 | DOI: https://doi.org/10.2478/s11534-008-0108-z

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Abstract

In this paper we use symmetry of Single Walled Carbon Nanotubes (SWCNTs) to generate some types of virtual sub-bands that are lower in number than the real sub-bands obtained through conventional-TB. It is shown that the virtual sub-bands maintain the value of band gap. In obtaining the sub bands, the interactions of the nearest and the second and third-nearest neighbors are taken into account. As the consequence of lower number of sub-bands, a significant reduction in computational effort has occurred and made the approach useful.

PACS: 71.15.Ap; 71.20.Tx; 71.23.-k

Keywords: helical symmetry; rotational symmetry; SWCNT; tight binding

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About the article

Published Online: 2008-09-27

Published in Print: 2008-12-01

Citation Information: Open Physics, Volume 6, Issue 4, Pages 824–833, ISSN (Online) 2391-5471, DOI: https://doi.org/10.2478/s11534-008-0108-z.

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© 2008 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

Citing Articles

Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.

[1]
Esmaeil Dastjerdy, Rahim Ghayour, and Hojjat Sarvari
Open Physics, 2011, Volume 9, Number 2
[2]
Mehdi Pakkhesal and Rahim Ghayour
Physica E: Low-dimensional Systems and Nanostructures, 2009, Volume 41, Number 8, Page 1507

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