Title :
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
fDate :
7/1/2007 12:00:00 AM
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;
Journal_Title :
Nanotechnology, IEEE Transactions on
DOI :
10.1109/TNANO.2007.896968
