Transport in a metallic nanotube at finite temperature

TitleTransport in a metallic nanotube at finite temperature
Publication TypeJournal Article
Year of Publication2009
AuthorsRen W, Wang CZ, Ho KM, Chan CT
Journal TitlePhysical Review B
Volume79
Pages161404
Date Published04/01
ISBN Number1098-0121
Accession NumberISI:000265945200017
Keywords', ballistic transport, carbon nanotubes, conductance, fermi level, fluctuations, green, model, molecular dynamics method, molecular-dynamics, phonons, s function methods, silicon, tight-binding calculations, walled carbon nanotubes
Abstract

We consider the effect of thermal phonon displacements on the coherent transport in carbon nanotubes. The atomic displacements are generated using tight-binding molecular dynamics simulations, and the conductances are computed using a nonequilibrium Green's function technique. Atomic displacements due to lattice vibrations lead to different levels of conductance reduction and fluctuation on the massive and massless bands of a metallic nanotube. Different conduction regimes are studied by examining the resistance on different length scales. The temperature-induced displacements have a significant impact on the ballistic or diffusive transport in carbon nanotube.

URL<Go to ISI>://000265945200017
DOI10.1103/Physrevb.79.161404