We report on the temperature dependence of the intrinsic resistance of long individual disordered single-wall carbon nanotubes. The resistance grows dramatically as the temperature is reduced, and the functional form is consistent with an activated behavior. These results are described by Coulomb blockade along a series of quantum dots. We occasionally observe a kink in the activated behavior that reflects the change of the activation energy as the temperature range is changed. This is attributed to charge hopping events between non-adjacent quantum dots, which is possible through cotunneling processes.
@article{arxiv.cond-mat/0606473,
title = {Cotunneling and one-dimensional localization in individual single-wall carbon nanotubes},
author = {B. Gao and D. C. Glattli and B. Placais and A. Bachtold},
journal= {arXiv preprint arXiv:cond-mat/0606473},
year = {2007}
}