Interelectronic interaction in dirty FS trilayers: A manifestation of “hidden” superconductivity

The properties of the ferromagnet/superconductor (FS) system are theoretically studied. Electron-electron pairing interaction in F layers is taken into account. The boundary value problem for the Usadel-like equations is considered in the case of so-called “dirty” limit. It is shown that both asymmetry and interelectronic interaction essentially influence on the critical properties of the F1SF2 trilayer. The appearance of the solitary superconductivity is predicted for this asymmetrical trilayer.