Superconductivity in Ropes of Single-Walled Carbon Nanotubes

M. Kociak; A. Yu. Kasumov; S. Guéron; B. Reulet; I. I. Khodos; Yu. B. Gorbatov; V. T. Volkov; L. Vaccarini; H. Bouchiat

doi:10.1103/PhysRevLett.86.2416

Superconductivity in Ropes of Single-Walled Carbon Nanotubes

M. Kociak, A. Yu. Kasumov, S. Guéron, B. Reulet, I. I. Khodos, Yu. B. Gorbatov, V. T. Volkov, L. Vaccarini, and H. Bouchiat

Phys. Rev. Lett. 86, 2416 – Published 12 March 2001

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 $2.5 μ A$ . 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

Authors & Affiliations

M. Kociak¹, A. Yu. Kasumov^1,2,*, 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