We report on the intershell electron transport in multiwalled carbon nanotubes (MWNT). To do this, local and nonlocal four-point measurements are used to study the current path through the different shells of a MWNT. For short electrode separations ≲ 1 μm the current mainly flows through the two outer shells, described by a resistive transmission line with an intershell conductance per length of ~(10 k\Omega)^{-1}/μm. The intershell transport is tunnel-type and the transmission is consistent with the estimate based on the overlap between π-orbitals of neighboring shells.
@article{arxiv.cond-mat/0407672,
title = {Determination of the Intershell Conductance in Multiwalled Carbon Nanotubes},
author = {B. Bourlon and C. Miko and L. Forro and D. C. Glattli and A. Bachtold},
journal= {arXiv preprint arXiv:cond-mat/0407672},
year = {2009}
}