Effect of diffusive boundaries on surface superconductivity in unconventional superconductors

Details Effect of diffusive boundaries on surface superconductivity in unconventional superconductors Effect of diffusive boundaries on surface superconductivity in unconventional superconductors

1996-05-07

arxiv.org/abs/cond-mat/9605044v1

Physics

Condensed Matter

Latex File, 12 pages, 2 Postscript figures, to appear in Phys. Rev. B (June 1 1996)

Scientific paper

10.1103/PhysRevB.53.15201

Boundary conditions for a superconducting order parameter at a diffusive scattering boundary are derived from microscopic theory. The results indicate that for all but isotropic gap functions the diffusive boundary almost completely suppresses surface superconductivity in the Ginzburg-Landau regime. This indicates that in anisotropic superconductors surface superconductivity can only be observed for surface normals along high symmetry directions where atomically clean surfaces can be cleaved.

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