2001/06/29 by Zi Kang Tang, Lingyun Zhang, Ning Wang +6 · 5 citations
Materials Science · Chemistry · #Graphene research and applications #Carbon Nanotubes in Composites #Fullerene Chemistry and Applications
paper · doi:10.1126/science.1060470
openalex publication_date 2001/06/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
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.