Conductance spectra of metallic nanotube bundles
Mesoscale and Nanoscale Physics
2008-11-12 v1 Materials Science
Abstract
We report a first principles analysis of electronic transport characteristics for (n,n) carbon nanotube bundles. When n is not a multiple of 3, inter-tube coupling causes universal conductance suppression near Fermi level regardless of the rotational arrangement of individual tubes. However, when n is a multiple of 3, the bundles exhibit a diversified conductance dependence on the orientation details of the constituent tubes. The total energy of the bundle is also sensitive to the orientation arrangement only when n is a multiple of 3. All the transport properties and band structures can be well understood from the symmetry consideration of whether the rotational symmetry of the individual tubes is commensurate with that of the bundle.
Keywords
Cite
@article{arxiv.0807.2957,
title = {Conductance spectra of metallic nanotube bundles},
author = {Wei Ren and C. T. Chan and T. H. Cho and T. C. Leung and Jian Wang and Hong Guo and Ping Sheng},
journal= {arXiv preprint arXiv:0807.2957},
year = {2008}
}