Title : ( The effect of uniaxial and torsional strains on the density of states of single walled carbon nanotubes )
Authors: Mehdi Pakkhesal , Seyed Ebrahim Hosseini ,
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Abstract
In this paper, we investigate the e ect of uniaxial and torsional strains on the Density of States (DoS) of single walled Carbon nanotubes (SWCNTs). We employ the nearest neighbor and also the third nearest neighbor -TB (Tight Binding) models for our investigation. It is shown that uniaxial and torsional strains in some cases of metallic SWCNTs not only open a band gap, but also e ectively increase the DoS of SWCNT. It is also shown that the mentioned types of strain have di erent e ects on the DoS of chiral SWCNTs; in some types, they increase the DoS at the band edges, while they decrease it at the band edges in other types.
Keywords
Tight binding; Carbon nanotubes; Density of states; Electronic band structure; Uniaxial strain; Torsional strain
@article{paperid:1070026,
author = {Pakkhesal, Mehdi and Hosseini, Seyed Ebrahim},
title = {The effect of uniaxial and torsional strains on the density of states of single walled carbon nanotubes},
journal = {Scientia Iranica},
year = {2018},
volume = {25},
number = {3},
month = {June},
issn = {1026-3098},
pages = {1608--1615},
numpages = {7},
keywords = {Tight binding; Carbon nanotubes; Density of states; Electronic band structure; Uniaxial strain; Torsional strain},
}
%0 Journal Article
%T The effect of uniaxial and torsional strains on the density of states of single walled carbon nanotubes
%A Pakkhesal, Mehdi
%A Hosseini, Seyed Ebrahim
%J Scientia Iranica
%@ 1026-3098
%D 2018
