Superconductivity in 4 Angstrom Single-Walled Carbon Nanotubes

Investigation of the magnetic and transport properties of single-walled small-diameter carbon nanotubes embedded in a zeolite matrix revealed that at temperatures below 20 kelvin, 4 angstrom tubes exhibit superconducting behavior manifest as an anisotropic Meissner effect, with a superconducting gap...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2001-06, Vol.292 (5526), p.2462-2465
Main Authors: Tang, Z. K., Zhang, Lingyun, Wang, N., Zhang, X. X., Wen, G. H., Li, G. D., Wang, J. N., Chan, C. T., Sheng, Ping
Format: Article
Language:English
Subjects:
Carbon
Chemistry, Physical organic
Climate
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Crystallites
Diamagnetism
Electric current
Electrodes
Exact sciences and technology
Fullerenes and related materials
Magnetic fields
Magnetic properties
Meissner effect
Metal foils
Nanotechnology
Nanotubes
Organic conductors
Physical organic chemistry
Physics
Properties of type I and type II superconductors
Superconducting materials (excluding high-tc compounds)
Superconductivity
Temperature
Transition temperature
Zeolites
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Summary:Investigation of the magnetic and transport properties of single-walled small-diameter carbon nanotubes embedded in a zeolite matrix revealed that at temperatures below 20 kelvin, 4 angstrom tubes exhibit superconducting behavior manifest as an anisotropic Meissner effect, with a superconducting gap and fluctuation supercurrent. The measured superconducting characteristics display smooth temperature variations owing to one-dimensional fluctuations, with a mean-field superconducting transition temperature of 15 kelvin. Statistical mechanic calculations based on the Ginzburg-Landau free-energy functional yield predictions that are in excellent agreement with the experiments.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1060470