| Issue |
Europhys. Lett.
Volume 42, Number 5, June 1998
|
|
|---|---|---|
| Page(s) | 553 - 558 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00566-9 | |
| Published online | 01 September 2002 | |
Surface superconductivity in a wedge
1
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
Received:
23
February
1998
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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