Nanotech 2002 Vol. 2
Nanotech 2002 Vol. 2
Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology

Molecular and Nanoelectronics Chapter 12

Effects of Structural Deformation and Tube Chirality on Electronic Conductance of Carbon Nanotubes

Authors: A. Svizhenko, A. Maiti and M.P. Anantram

Affilation: NASA Ames Research Center, United States

Pages: 314 - 317

Keywords: nanotube, molecular dynamics, tight-binding, Green’s function, sensor

Abstract:
A combination of large scale classical force-field (UFF), density functional theory (DFT) and tight-binding Green’s function transport calculations is used to study the electronic properties of carbon nanotubes under the twist, bending and AFM-tip deformation. We found that in agreement with experiment a significant change in electronic conductance can be induced by AFM-tip deformation of metallic zigzag tubes and by twist deformation of armchair tubes. The effect is explained in terms of bandstructure change under deformation. followed by a simple p-orbital analysis of nanotube bandstructure under deformation.

Effects of Structural Deformation and Tube Chirality on Electronic Conductance of Carbon Nanotubes

ISBN: 0-9708275-6-3
Pages: 504