Quantum Electron Transport in Carbon Nanotubes: Velocity Oscillations and Length Dependence

Author

Akturk, Akin ; Pennington, Gary W. ; Goldsman, Neil ; Wickenden, Alma E.

Author_Institution

Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD

fYear

2006

fDate

6-8 Sept. 2006

Firstpage

31

Lastpage

34

Abstract

We report Monte Carlo simulation results that show position-dependent velocity oscillations and length effects in semiconducting single-walled zig-zag carbon nanotubes. The simulations show velocity oscillations with terahertz frequencies, which approach phonon frequencies; and velocity values reaching 7times10⁷ cm/s. Simulations also show that average velocity overshoots and then decreases as the tube length increases. Quantum effects due to the finite length of the tubes, as well as radial confinement are also included in our Monte Carlo simulations

Keywords

Monte Carlo methods; carbon nanotubes; electrical conductivity; phonons; semiconductor nanotubes; C; Monte Carlo simulation; carbon nanotubes; nanotube length effects; phonon frequencies; position-dependent velocity oscillations; quantum effects; quantum electron transport; radial confinement; semiconducting single-walled zig-zag carbon nanotube; terahertz frequencies; velocity overshoots; velocity values; Carbon nanotubes; Electric variables; Electron tubes; Frequency; Monte Carlo methods; Nanoscale devices; Phonons; Scattering; Semiconductivity; Wrapping; Carbon nanotube; Terahetz frequency; monte carlo simulation; velocity oscillation;

fLanguage

English

Publisher

ieee

Conference_Titel

Simulation of Semiconductor Processes and Devices, 2006 International Conference on

Conference_Location

Monterey, CA

Print_ISBN

1-4244-0404-5

Type

conf

DOI

10.1109/SISPAD.2006.282831

Filename

4061574