Proximity Effects in Superconductor/Insulating-Ferromagnet NbN/GdN Multilayers

Abstract
Superconductor/insulating-ferromagnet NbN/GdN multilayers reveal that the superconducting properties of the NbN layers are dominated by the insulating nature of the GdN layers, which curtail the pair-breaking effect despite the strong ferromagnetism. The effects of ferromagnetic walls on superconducting slabs have been captured. Very large parallel critical fields have also been observed.