Influence of the confinement geometry on surface superconductivity

Details Influence of the confinement geometry on surface superconductivity Influence of the confinement geometry on surface superconductivity

1999-05-03

arxiv.org/abs/cond-mat/9905016v1

Physical Review B, Vol. 60 (no. 5), p. 3084 (1999)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures. Accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.60.3084

The nucleation field for surface superconductivity, $H_{c3}$, depends on the geometrical shape of the mesoscopic superconducting sample and is substantially enhanced with decreasing sample size. As an example we studied circular, square, triangular and wedge shaped disks. For the wedge the nucleation field diverges as $H_{c3}/H_{c2}=\sqrt{3}/\alpha$ with decreasing angle ($\alpha$) of the wedge, where $H_{c2}$ is the bulk upper critical field.

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