Effect of diffusive boundaries on surface superconductivity in unconventional superconductors

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.

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

References in corpus (3)

• The Order Parameter for the Superconducting Phases of UPt${}_3$
• Surface superconductivity and $H_{c3}$ in UPt${}_3$
• Surface superconductivity and order parameter suppression in UPt${}_3$

Cited by in corpus (2)

• Surface superconductivity as the primary cause of broadening of superconducting transition in Nb-films
• Onset of surface superconductivity beyond the Saint-James-de Gennes limit