Vortex charge in mesoscopic superconductors

Abstract

The electric charge density in mesoscopic superconductors with circular symmetry, i.e. disks and cylinders, is studied within the phenomenological Ginzburg-Landau approach. We found that even in the Meissner state there is a charge redistribution in the sample which makes the sample edge become negatively charged. In the vortex state there is a competition between this Meissner charge and the vortex charge which may change the polarity of the charge at the sample edge with increasing magnetic field. It is shown analytically that in spite of the charge redistribution the mesoscopic sample as a whole remains electrically neutral.

8 pages, 7 figures; submitted to Phys. Rev. B

References in corpus (7)

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• Charged Vortices in High Temperature Superconductors Probed by NMR
• Vortex Matter in Mesoscopic Superconducting Disks and Rings
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Cited by in corpus (4)

• Bernoulli potential in type-I and weak type-II superconductors: I. Surface charge
• The ac magnetic response of mesoscopic type II superconductors
• Surface charge of a flat superconducting slab in the Meissner state
• On the possibility of a relativistic correction to the E and B fields around a current-carrying wire