Electron Transport and Hot Phonons in Carbon Nanotubes

Preprint

19 December 2005

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0503278

Abstract

We demonstrate the key role of phonon occupation in limiting the high-field ballistic transport in metallic carbon nanotubes. In particular, we provide a simple analytic formula for the electron transport scattering length, that we validate by accurate first principles calculations on (6,6) and (11,11) nanotubes. The comparison of our results with the scattering lengths fitted from experimental I-V curves indicates the presence of a non-equilibrium optical phonon heating induced by electron transport. We predict an effective temperature for optical phonons of thousands Kelvin.

Keywords

SCATTERING LENGTHS
PHONON OCCUPATION
CARBON NANOTUBES
OPTICAL PHONONS
HOT PHONONS
TEMPERATURE
TRANSPORT

All Related Versions

Version 1, 2005-03-11, ArXiv
Version 2, 2005-12-19, ArXiv
Published version: Physical Review Letters, 95 (23), 236802.

This publication has 0 references indexed in Scilit: