Ginzburg–Landau simulation for a vortex around a columnar defect in a superconducting film

By means of numerical simulations based on Ginzburg–Landau theory, we study the vortex depinning from a columnar defect in a superconducting film. We evaluate the limiting thickness of the film, below which the depinning does not occur even under an application of the magnetic field perpendicular to...

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Bibliographic Details
Published inThe Journal of physics and chemistry of solids Vol. 69; no. 12; pp. 3301 - 3303
Main Authors Nakai, N., Hayashi, N., Machida, M.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Kidlington Elsevier Ltd 01.12.2008
Elsevier
Subjects
A. Superconductors
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. Superconductivity
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
Vortex lattices ,flux pinning, flux creep
A. Superconductors
D. Superconductivity
Thickness
Superconducting films
Digital simulation
Ginzburg-Landau theory
Vortices
Superconductivity
Magnetic field effects
Columnar defects
Order parameters
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Summary:By means of numerical simulations based on Ginzburg–Landau theory, we study the vortex depinning from a columnar defect in a superconducting film. We evaluate the limiting thickness of the film, below which the depinning does not occur even under an application of the magnetic field perpendicular to the columnar defect. The limiting thickness is a measure of the pinning strength of the columnar defect. The dependence of this limiting thickness on the magnitude of the applied field is obtained for two types of columnar defects.
ISSN:0022-3697
1879-2553
DOI:10.1016/j.jpcs.2008.06.075