Surface Effect on Spatial Length-Scales in a Two-Gap Superconductor

• The healing of two-band superconductivity near its interface is studied. It is demonstrated that the restoration of superconductivity gaps in the immediate vicinity of the interface is governed by two length scales: the first one diverges at critical temperature T (c) , while the second one diverges at T (c+)< T (c) . By moving away from the boundary, the temperature dependencies of characteristic lengths change so that singularity at T (c+) becomes removed in the bulk by arbitrary weak interband coupling. The asymptotes for the spatial behavior of gaps have been found analytically near the surface and approaching the bulk state.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Two-band superconductivity

Surface

Spatial behavior

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)