The spin valve device based on asymmetrical ferromagnet-superconductor trilayer in an external magnetic field

Abstract

© Published under licence by IOP Publishing Ltd. We theoretically explore superconducting proximity effect for The three-layered ferromagnet/superconductor (FS) heterostructures. We consider The boundary value problem for The Usadel-like equations in The case of so-called «dirty» limit. The different mutual orientations of The F layers magnetizations are examined in presence of The external magnetic field. The results of numerical calculations for critical temperature Tc at various parameters of FS structures are presented. The appearance of solitary superconductivity is predicted for The F1F2S system. We also discuss possible spin valve applications for F1F2S trilayers.