Supercurrents Through Single-Walled Carbon Nanotubes

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 super-conducting electrodes, permitting structural study i...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1999-05, Vol.284 (5419), p.1508-1511
Main Authors: A. Yu. Kasumov, Deblock, R., Kociak, M., Reulet, B., Bouchiat, H., Khodos, I. I., Yu. B. Gorbatov, Volkov, V. T., Journet, C., Burghard, M.
Format: Article
Language:English
Subjects:
Carbon
Carbon nanotubes
Climate
Cognitive Style
Critical current
Electric current
Electrodes
Low temperature
Magnetic fields
Nanotechnology
Nanotubes
Physics
Superconductivity
Temperature dependence
Transition temperature
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Summary: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 super-conducting electrodes, permitting structural study in a transmission electron microscope. When the resistance of the nanotube junction is sufficiently low, it becomes super-conducting and can carry high super-currents. The temperature and magnetic field dependence of the critical current of such junctions exhibits unusual features related to their strong one-dimensional character.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.284.5419.1508