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2008 | 6 | 4 | 824-833
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A symmetry based investigation of the band gap of SWCNTs

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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.
  • Department of Electrical Engineering, Shiraz University, Shiraz, Iran
  • Department of Electrical Engineering, Shiraz University, Shiraz, Iran
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