Hostname: page-component-76fb5796d-vfjqv Total loading time: 0 Render date: 2024-04-28T09:21:14.620Z Has data issue: false hasContentIssue false
  • English
  • Français

First-Principles Calculation of the Electronic Properties of Single-Walled Carbon Nanotubes under Torsions

Published online by Cambridge University Press:  10 April 2013

K. Mihara  and
K. Shintani
K. Mihara
Affiliation:
Department of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
K. Shintani
Affiliation:
Department of Mechanical Engineering and Intelligent Systems, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
Get access

Abstract

The structures and electronic properties of single-walled carbon nanotubes (SWNTs) under torsions are investigated using first-principles calculation based on the density functional theory. A SWNT of the chiral indices (5,0) is equilibrated under a torsion, and its equilibrium energy is obtained. It is revealed there is a structure having the minimum energy at a torsion of a specific angle of twist between 0 deg/Å and 1.88 deg/Å. Next, shear deformations corresponding to torsions imposed on the SWNTs of the chiral indices (5,0) and (5,1) are given to graphene sheets, and their energy band structures are calculated. It is concluded their band gaps decrease with the increase of the specific angle of twist.

Keywords

Cnanostructureelectronic structure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1505: Symposium W – Carbon Nanomaterials , 2013 , mrsf12-1505-w03-58
Copyright
Copyright © Materials Research Society 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Iijima, S., Nature 354, 56 (1991).CrossRefGoogle Scholar
Kato, K., Koretsune, T., and Saito, S., Phys. Rev. B 85, 115448 (2012).CrossRefGoogle Scholar
Kresse, G. and Furthmüller, J., Phys. Rev. B 54, 11169 (1996).CrossRefGoogle Scholar
Monkhorst, H. J. and Pack, J. D., Phys. Rev. B 13, 5188 (1976).CrossRefGoogle Scholar