We have measured the electrical properties of individual bundles, or "ropes" of single-walled carbon nanotubes. Below ~10 K, the low bias conductance is suppressed for voltages below a few millivolts. In addition, dramatic peaks are observed in the conductance as a function of a gate voltage that modulates the number of electrons in the rope. We interpret these results in terms of single electron charging and resonant tunneling through the quantized energy levels of the nanotubes comprising the rope.
@article{arxiv.cond-mat/9612162,
title = {Single Electron Transport in Ropes of Carbon Nanotube},
author = {Marc Bockrath and David H. Cobden and Paul L. McEuen and Nasreen G. Chopra and A. Zettl and Andreas Thess and R. E. Smalley},
journal= {arXiv preprint arXiv:cond-mat/9612162},
year = {2008}
}
Comments
4 pages of text plus 3 eps figures; submitted to Science