Title: Paraconductivity of a mesoscopic superconducting tube in the nonohmic regime
Authors: Carballeira, C ×
Moshchalkov, Victor #
Issue Date: Feb-2005
Publisher: Published by the American Physical Society through the American Institute of Physics
Series Title: Physical Review B, Condensed Matter and Materials Physics vol:71 issue:5
Conference: date:Katholieke Univ Leuven, Lab Solid State Phys & Magnetism, Nanoscale Superconduct & Magnetism Grp, B-3001 Leuven, Belgium
Abstract: By using a generalized version of the time-dependent Ginzburg-Landau theory, we have calculated the paraconductivity, Delta sigma, of a superconducting mesoscopic tube beyond the conventional ohmic approximation. Among other dimensionality effects, the so-obtained paraconductivity expressions show that, close to T-c and deep inside the nonohmic region, a dimensional crossover from the one-dimensional to the two-dimensional fluctuation regimes can be induced which, in turn, may be understood in terms of an effective shrinkage of the superconducting coherence length with the electrical field. These nonohmic effects on Delta sigma may be observed in Al mesoscopic tubes and carbon nanotubes, thus opening new experimental possibilities to investigate the superconducting behavior of these nanostructured materials.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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