Room-temperature quasi-ballistic electron transport in double-wall carbon nanotubes (DWNT) is demonstrated. Conductance dependence on the length was measured by submerging DWNTs into liquid mercury. The conductance plots show plateaus, indicating weak dependence of the electrode-tube-electrode electrical resistance on the length of the connecting nanotube. We infer a mean free path between 0.6 and 10 micron meters for around 80% of the DWNTs, which is in good agreement with calculations based on the electron scattering by acoustic phonons and by disorder.
@article{arxiv.cond-mat/0410310,
title = {Quasi-ballistic electron transport in double-wall carbon nanotubes},
author = {Hisashi Kajiura and Houjin Huang and Alexey Bezryadin},
journal= {arXiv preprint arXiv:cond-mat/0410310},
year = {2009}
}