Abstract
We report measurements on ropes of single-walled carbon nanotubes (SWNT) in low-resistance contact to nonsuperconducting (normal) metallic pads, at low voltage and at temperatures down to 70 mK. In one sample, we find a 2 orders of magnitude resistance drop below 0.55 K, which is destroyed by a magnetic field of the order of 1 T, or by a dc current greater than . These features strongly suggest the existence of superconductivity in ropes of SWNT.
- Received 18 October 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.2416
©2001 American Physical Society