Resistive Transitions In S/F/S Trilayers

摘要

The phase transition of Nb/Cu_(0.41)Ni_(0.59)/Nb triple layers from the normal to thesuperconducting state has been studied experimentally by measuring the temperature dependence ofthe electrical resistance, R(T). It is shown that the shape of the R(T) curves is different depending onthe Cu_(0.41)Ni_(0.59)thickness. To explain the experimental data we developed a qualitative model whichmakes more evident the interconnection between the superconducting phase transition and the 0 to Itcrossover in SFS structures.