The effect of boundary conditions on the superconducting transition critical temperature in superlattices

For a superconducting superlattice consisting of alternating layers of two materials with thicknesses a and b, an analogue of the Cooper formula is obtained for boundary conditions in the general form. The effect of the boundary conditions on the critical temperature is studied, and the possibility of order parameter localization in the layers with a higher critical temperature is demonstrated. (C) 2001 MAIK "Nauka/Interperiodica".