Supercurrents Through Single-Walled Carbon Nanotubes

Author:

Kasumov A. Yu.12,Deblock R.1,Kociak M.1,Reulet B.1,Bouchiat H.1,Khodos I. I.2,Gorbatov Yu. B.2,Volkov V. T.2,Journet C.3,Burghard M.4

Affiliation:

1. Laboratoire de Physique des Solides, Associé au CNRS, Bâtiment 510, Université Paris-Sud, 91405, Orsay, France.

2. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka 142432 Moscow Region, Russia.

3. Groupe de Dynamique des Phases Condensées, Université Montpellier II, 34095 Montpellier, France.

4. Max-Planck-Institute, D-70506 Stuttgart, Germany.

Abstract

Proximity-induced superconductivity in single-walled carbon nanotubes below 1 kelvin, both in a single tube 1 nanometer in diameter and in crystalline ropes containing about 100 nanotubes, was observed. The samples were suspended between two superconducting electrodes, permitting structural study in a transmission electron microscope. When the resistance of the nanotube junction is sufficiently low, it becomes superconducting and can carry high supercurrents. The temperature and magnetic field dependence of the critical current of such junctions exhibits unusual features related to their strong one-dimensional character.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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