A Manifestation of Latent Superconductivity in Ferromagnet via a Proximity Effect in FS Structures

We theoretically study the proximity effect in the thin-film layered ferromagnet (F) - super-conductor (S) heterostructures of two types (F1SF2 and F1F2S). We consider the boundary value problem for the Usadel-like equations in the case of so-called “dirty” limit. The “latent” superconducting pairing interaction in F layers taken into account. It is shown that the inter-electronic interaction essentially influences on the critical properties of the both trilayers. The appearance of the solitary superconductivity is predicted for the F1SF2 and F1F2S systems.