Order parameter of layered superconducting structures

It is suggested that the order parameter and the critical temperature in an S-N structure be described on the basis of the microscopic Ψ theory, modeling the metal in the normal state by the Ginzburg-Landau equation with a negative coefficient a. It is shown that at a contact between layers the order parameter in the layer whose temperature is below the critical temperature induces an order parameter in the other layer whose temperature is higher than the critical temperature.