A Self-Consistent Microscopic Theory of Surface Superconductivity
نویسندگان
چکیده
The electronic structure of the superconducting surface sheath in a typeII superconductor in magnetic fields Hc2 < H < Hc3 is calculated selfconsistently using the Bogoliubov-de Gennes equations. We find that the pair potential ∆(x) exhibits pronounced Friedel oscillations near the surface, in marked contrast with the results of Ginzburg-Landau theory. The local density of states near the surface shows a significant depletion near the Fermi energy due to the development of local superconducting order. We suggest that this structure could be unveiled by scanning-tunneling microscopy studies performed near the edge of a superconducting sample. PACS numbers: 74.60.Ec Typeset using REVTEX
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