Superconductivity in carbon nanotube ropes: Ginzburg-Landau approach and the role of quantum phase slips

2003/08/08 by A. De Martino, De Martino, A., R. Egger +1
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0308162

5 pages, 1 figure

arxiv created 2003/08/08 · arxiv updated 2009/12/01

Abstract

We derive and analyze the low-energy theory of superconductivity in carbon nanotube ropes. A rope is modelled as an array of ballistic metallic nanotubes, taking into account phonon-mediated plus Coulomb interactions, and Josephson coupling between adjacent tubes. We construct the Ginzburg-Landau action including quantum fluctuations. Quantum phase slips are shown to cause a depression of the critical temperature T_c below the mean-field value, and a temperature-dependent resistance below T_c.

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