Properties of mesoscopic superconducting thin-film rings: London approach

V. G. Kogan; John R. Clem; R. G. Mints

doi:10.1103/PhysRevB.69.064516

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Properties of mesoscopic superconducting thin-film rings: London approach

V. G. Kogan, John R. Clem, R. G. Mints

DOI 10.1103/PhysRevB.69.064516 · Physical Review B

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Abstract

Superconducting thin-film rings smaller than the film penetration depth (the Pearl length) are considered. The current distribution, magnetic moment, and thermodynamic potential F(H,N,v) for a flat, washer-shaped annular ring in a uniform applied field H perpendicular to the film are solved analytically within the London approach for a state with winding number N and a vortex at radius v between the inner and outer radii.