City Research Online

Superconductivity in ropes of carbon nanotubes

Ferrier, M., De Martino, A., Kasumov, A., Gueron, S., Kociak, M., Egger, R. and Bouchiat, H. (2004). Superconductivity in ropes of carbon nanotubes. Solid State Communications, 131, doi: 10.1016/j.ssc.2004.05.044

Abstract

Recent experimental and theoretical results on intrinsic superconductivity in ropes of single-wall carbon nanotubes are reviewed and compared. We find strong experimental evidence for superconductivity when the distance between the normal electrodes is large enough. This indicates the presence of attractive phonon-mediated interactions in carbon nanotubes, which can even overcome the repulsive Coulomb interactions. The effective low-energy theory of rope superconductivity explains the experimental results on the temperature-dependent resistance below the transition temperature in terms of quantum phase slips. Quantitative agreement with only one fit parameter can be obtained. Nanotube ropes thus represent superconductors in an extreme 1D limit never explored before.

Publication Type: Article
Additional Information: 19 pages, 9 figures
Subjects: Q Science > QC Physics
Departments: School of Mathematics, Computer Science & Engineering > Mathematics
Related URLs:
URI: http://openaccess.city.ac.uk/id/eprint/1666
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