Proximity effect in ferromagnet-superconductor hybrid structures: role of the pairing symmetry

TL;DR

This paper investigates how the pairing symmetry affects the proximity effect in superconductor-ferromagnet hybrid structures using self-consistent calculations within the Bogoliubov-deGennes formalism.

Contribution

It provides a detailed analysis of the proximity effect considering pairing symmetry, exchange field, interfacial scattering, and crossed Andreev reflection in various hybrid structures.

Findings

Pairing symmetry significantly influences the spatial variation of the pair amplitude.

The exchange field and interfacial scattering alter the local density of states.

Crossed Andreev reflection impacts the proximity effect in hybrid structures.

Abstract

The spatial variations of the pair amplitude, and the local density of states in d-wave or s-wave superconductor-ferromagnet hybrid structures are calculated self consistently using the Bogoliubov-deGennes formalism within the two dimensional extended Hubbard model. We describe the proximity effect in superconductor / ferromagnet (SF) bilayers, FSF trilayers, and interfaces between a superconductor and a ferromagnetic domain wall. We investigate in detail the role played by the pairing symmetry, the exchange field, interfacial scattering and crossed Andreev reflection.