Superconductivity in ropes of single-walled carbon nanotubes

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 magn...

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Bibliographic Details
Published in:Physical review letters 2001-03, Vol.86 (11), p.2416-2419
Main Authors: Kociak, M, Kasumov, A Y, Guéron, S, Reulet, B, Khodos, I I, Gorbatov, Y B, Volkov, V T, Vaccarini, L, Bouchiat, H
Format: Article
Language:English
Subjects:
Physics
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Summary: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 2.5 microA. These features strongly suggest the existence of superconductivity in ropes of SWNT.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.86.2416