The inverse proximity effect in strong ferromagnet-superconductor structures

TL;DR

This paper investigates the inverse proximity effect in superconductor-ferromagnet structures, analyzing induced magnetization and superconducting correlations using a quasiclassical Green function approach, and compares findings with recent experiments.

Contribution

It introduces a detailed theoretical analysis of the inverse proximity effect in strongly spin-polarized ferromagnet-superconductor hybrids, including singlet to triplet conversion mechanisms.

Findings

Induced magnetization in superconductors due to inverse proximity effect.

Observation of singlet to triplet superconducting correlation conversion.

Comparison of theoretical results with recent experimental data.

Abstract

The magnetization in a superconductor induced due to the inverse proximity effect is investigated in hybrid bilayers containing a superconductor and a ferromagnetic insulator or a strongly spin-polarized ferromagnetic metal. The study is performed within a quasiclassical Green function framework, wherein Usadel equations are solved with boundary conditions appropriate for strongly spin-polarized ferromagnetic materials. A comparison with recent experimental data is presented. The singlet to triplet conversion of the superconducting correlations as a result of the proximity effect with a ferromagnet is studied.