Electric Charges in Superconducting Mesoscopic Samples |
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Authors: | S.V. Yampolskii B.J. Baelus F.M. Peeters J. Koláček |
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Affiliation: | (1) Department of Physics, University of Antwerp (UIA), Universiteitsplein 1, B-2610 Antwerpen, Belgium;(2) Institute of Physics, Acad. Sci. CR, Cukrovarnická 10, Praha 6, Czech Republic |
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Abstract: | The distribution of the electric charge density in mesoscopic superconducting disks and cylinders is studied within the phenomenological Ginzburg-Landau approach. We found that even in the Meissner state the mesoscopic sample exhibits a non-uniform charge distribution such that a region near the sample edge becomes negatively charged. When vortices are inside the sample there is a superposition of the negative charge located at the vortex core and this Meissner charge, and, as a result, the charge at the sample edge changes sign as a function of the applied magnetic field. |
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Keywords: | mesoscopic superconductor Meissner state vortex charge |
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