R. Seviour et al., CONDUCTANCE SUPPRESSION IN NORMAL-METAL-SUPERCONDUCTOR MESOSCOPIC STRUCTURES, Physical review. B, Condensed matter, 58(18), 1998, pp. 12338-12343
Using a scattering matrix approach and quasiclassical Green's function
technique, we calculate the conductance of the superconductor-normal-
metal (S/N) system (see Fig. 1). We establish that the difference betw
een the superconducting and normal state conductance (delta G=G(s)-G(n
)) is negative for large S/N interface resistances (R-S/N) and changes
sign with decreasing R-S/N. [S0163-1829(98)03742-4].