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APS » Journals » Phys. Rev. Lett. » Volume 86 » Issue 11
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Phys. Rev. Lett. 86, 2416–2419 (2001)

Superconductivity in Ropes of Single-Walled Carbon Nanotubes

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M. Kociak1, A. Yu. Kasumov1,2,*, S. Guéron1, B. Reulet1, I. I. Khodos2, Yu. B. Gorbatov2, V. T. Volkov2, L. Vaccarini3, and H. Bouchiat1
1Laboratoire de Physique des Solides, Associé au CNRS, Bât. 510, Université Paris-Sud, 91405, Orsay, France
2Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka 142432 Moscow Region, Russia
3Groupe de Dynamique des Phases Condensées, Université Montpellier, II 34095 Montpellier, France

Received 18 October 2000; published in the issue dated 12 March 2001

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 μA. These features strongly suggest the existence of superconductivity in ropes of SWNT.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.86.2416
DOI:
10.1103/PhysRevLett.86.2416
PACS:
74.10.+v, 74.50.+r, 74.70.-b

*Present address: Starlab, La tour de Freins, 555 rue Engeland 1180 Uclle, Brussels, Belgium.

 
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