Local and Non-local Shot Noise in Multiwalled Carbon Nanotubes
Mesoscale and Nanoscale Physics
2010-06-30 v1
Abstract
We have investigated shot noise in multiterminal, diffusive multiwalled carbon nanotubes (MWNTs) at 4.2 K over the frequency f = 600 - 850 MHz. Quantitative comparison of our data to semiclassical theory, based on non-equilibrium distribution functions, indicates that a major part of the noise is caused by a non-equilibrium state imposed by the contacts. Our data exhibits non-local shot noise across weakly transmitting contacts while a low-impedance contact eliminates such noise almost fully. We obtain F_{tube}< 0.03 for the intrinsic Fano factor of our MWNTs.
Keywords
Cite
@article{arxiv.0706.2658,
title = {Local and Non-local Shot Noise in Multiwalled Carbon Nanotubes},
author = {T. Tsuneta and P. Virtanen and F. Wu and T. Wang and T. T. Heikkilä and P. J. Hakonen},
journal= {arXiv preprint arXiv:0706.2658},
year = {2010}
}
Comments
4 pages, 4 figures