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Effect of diffusive boundaries on surface superconductivity in unconventional superconductors

D. F. Agterberg·M. B. Walker
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Abstract

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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D. F. Agterberg, M. B. Walker. 1996-05-07. Effect of diffusive boundaries on surface superconductivity in unconventional superconductors. https://doi.org/10.1103/physrevb.53.15201

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