Electron Transport and Velocity Oscillations in a Carbon Nanotube

Author

Akturk, Akin ; Pennington, Gary ; Goldsman, Neil ; Wickenden, Alma

Author_Institution

Univ. of Maryland, College Park

Volume

6

Issue

4

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

469

Lastpage

474

Abstract

We report Monte Carlo (MC) simulation results showing applied bias dependent spatial velocity oscillations for semiconducting single-walled zig-zag carbon nanotubes (CNTs). MC simulations show velocity oscillations in CNTs at different lengths due to high scattering rates associated with optical phonon emissions in the one-dimensional CNT system. The frequencies of these oscillations are as high as 30 THz. In addition, we investigate average ensemble electron velocities as a function of tube length.

Keywords

Monte Carlo methods; carbon nanotubes; electrical conductivity; electron-phonon interactions; elemental semiconductors; C; Monte Carlo simulation; average ensemble electron velocity; carbon nanotube; electron transport; electron-phonon interaction; optical phonon emission; semiconducting single-walled zig-zag CNT; spatial velocity oscillation; terahertz oscillations; Carbon nanotubes; Dispersion; Electric variables; Electron optics; Electron tubes; Frequency; Monte Carlo methods; Optical scattering; Phonons; Semiconductivity; Carbon nanotubes; Monte Carlo methods; electron transport; terahertz oscillations;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2007.896968

Filename

4268331