Title :
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
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;
Conference_Titel :
Simulation of Semiconductor Processes and Devices, 2006 International Conference on
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0404-5
DOI :
10.1109/SISPAD.2006.282831
