This article has an erratum: [https://doi.org/10.1209/epl/i1999-00569-0]
Volume 42, Number 5, June 1998
|Page(s)||553 - 558|
|Section||Condensed matter: electronic structure, electrical, magnetic and optical properties|
|Published online||01 September 2002|
Surface superconductivity in a wedge
Theoretische Fysica van de Vaste Stof,
Universiteit Antwerpen (UIA)
Universiteitsplein 1, B-2610 Antwerpen, Belgium
2 Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven Celestijnenlaan 200 D, B-3001 Leuven, Belgium
Accepted: 2 April 1998
For a superconducting wedge-like sample with angle α, the superconducting state is described and the phase boundaries are analyzed in the framework of the variational approach to the linearized Ginzburg-Landau equation. The nucleation of the superconducting state is shown to be substantially enhanced in the vicinity of the wedge's edge, where the local surface critical field Hc3 exceeds the bulk upper critical field Hc2 by the factor depending on α. The enhancement factor is 1.69 for and is increased up to 3.79 for .
PACS: 74.80.-g – Spatially inhomogeneous structures / 74.20.De – Phenomenological theories (two-fluid, Ginzburg-Landau, etc.) / 74.25.Dw – Superconductivity phase diagrams
© EDP Sciences, 1998
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