Proximity Effect and Interface Transparency in Nb-based S/N and S/F Layered Structures

摘要

The interface transparency T has been investigated for different S/N and S/F layered structures realized by sputtering and by Molecular Beam Epitaxy (MBE). We have chosen Nb as a superconductor (S), Cu, Ag and Pd as a normal metal (N) and PdNi and Fe as ferromagnetic materials (F). The obtained result for T do not seem strongly influenced by fabrication methods but more by intrinsic factors related to the microscopic properties of the two materials.