# Influence of spin ordering on superconducting correlations in the spin-one-half Falicov-Kimball model with Hund and Hubbard coupling

## TL;DR

This paper investigates how different types of spin ordering in a generalized Falicov-Kimball model influence superconducting correlations, revealing that ferromagnetic order suppresses while antiferromagnetic order enhances these correlations significantly.

## Contribution

It introduces a detailed analysis of spin ordering effects on superconductivity within a generalized Falicov-Kimball model with Hund and Hubbard interactions.

## Key findings

- Ferromagnetic spin clusters suppress d-wave superconducting correlations.
- Antiferromagnetic spin order enhances superconducting correlations by up to a factor of 8.
- Antiferromagnetic phases show significant increase in superconducting pairing.

## Abstract

The generalized spin-one-half Falicov-Kimball model with Hund and Hubbard coupling is used to examine effects of spin ordering on superconducting correlations in the strongly correlated electron and spin systems. It is found that the ferromagnetic spin clusters (lines, bands, domains) suppress the superconducting correlations in the d-wave chanel, while the antiferromagnetic ones have the fully opposite effect. The enhancement of the superconducting correlations due to the antiferromagnetic spin ordering is by factor 3 in the axial striped phase and even by the factor 8 in the phase segregated phase.