Superconducting Heterostructures for Applications in Electronics and Communication Technologies

The present research touches upon the questions concerning nonmonotonic critical temperature behavior in S/F/S (S denotes for superconductor and F for ferromagnet) hybrid structures. The aim of the research is to extend and generalize the theoretical basis for calculation critical temperature in S/F/S structures and provide corresponding results. The problem is formulated with the help of Usadel differential equations with corresponding boundary conditions. To accomplish the outcome single and multimode approximations methods developed in previous investigations were utilized. The results of the study present various plots, where critical temperature dependencies on ferromagnet thickness of F layer are illustrated. Analyzing the derived results, it is clear that demonstrates dumped oscillatory behavior in S/F/S systems. In the study we present comparison between single mode and multimode approximations. Moreover, analysis of the superconductor critical thickness is also provided. This research presents much interest for those who investigates properties of hybrid structures and can be applied in further studies of more complicated multilayer nanostructures.