# How experimentally to detect a solitary superconductivity in dirty ferromagnet-superconductor trilayers?

## TL;DR

This paper provides a theoretical framework for detecting solitary superconductivity in dirty ferromagnet-superconductor trilayers, emphasizing experimental preparation and proposing a superconducting spin valve model.

## Contribution

It introduces a method to experimentally identify solitary superconductivity in F-S heterostructures considering the dirty limit and latent pairing interactions.

## Key findings

- Proposes a recipe for experimental realization of solitary superconductivity.
- Models a superconducting spin valve based on F1F2S trilayers.
- Analyzes the proximity effect using Usadel equations in the dirty limit.

## Abstract

We theoretically study the proximity effect in the thin-film layered ferromagnet (F) - superconductor (S) heterostructures in F$_1$F$_2$S design. 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. The focus is on the recipe of experimental preparation the state with so-called solitary superconductivity. We also propose and discuss the model of the superconducting spin valve based on F$_1$F$_2$S trilayers in solitary superconductivity regime.