A symmetry based investigation of the band gap of SWCNTs

• Autorzy: Mehdi Pakkhesal , Rahim Ghayour
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

helical symmetry; rotational symmetry; SWCNT; tight binding

• Czasopismo: Open Physics
• Rocznik: 2008
• Tom: 6
• Numer: 4
• Strony: 824-833

Daty

wydano

2008-12-01

online

2008-09-27

Twórcy

autor

Mehdi Pakkhesal

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

autor

Rahim Ghayour

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

Bibliografia

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Identyfikatory

DOI

10.2478/s11534-008-0108-z