Abstract
We report that entirely end-bonded multiwalled carbon nanotubes (MWNTs) can exhibit superconductivity with a transition temperature () as high as 12 K, which is approximately 30 times greater than reported for ropes of single-walled nanotubes. We find that the emergence of this superconductivity is highly sensitive to the junction structures of the Au electrode/MWNTs. This reveals that only MWNTs with optimal numbers of electrically activated shells, which are realized by end bonding, can allow superconductivity due to intershell effects.
- Received 12 February 2005
DOI:https://doi.org/10.1103/PhysRevLett.96.057001
©2006 American Physical Society