We have investigated proximity-induced supercurrents in single-walled carbon nanotubes in the Kondo regime and compared them with supercurrents obtained on the same tube with Fabry-P\'{e}rot resonances. Our data display a wide distribution of Kondo temperatures \emph{TK} = 1 - 14 K, and the measured critical current ICM vs. \emph{TK} displays two distinct branches; these branches, distinguished by zero-bias splitting of the normal-state Kondo conductance peak, differ by an order of magnitude at large values of TK. Evidence for renormalization of Andreev levels in Kondo regime is also found.
@article{arxiv.0809.3386,
title = {Single-walled carbon nanotube weak links: from Fabry-P\'{e}rot to Kondo regime},
author = {F. Wu and R. Danneau and P. Queipo and E. Kauppinen and T. Tsuneta and P. J. Hakonen},
journal= {arXiv preprint arXiv:0809.3386},
year = {2008}
}