Proximity effects near the interface between d-wave superconductors and ferro/antiferromagnets

TL;DR

This paper investigates how superconductivity and magnetism influence each other at interfaces between d-wave superconductors and ferromagnetic or antiferromagnetic materials, revealing coexistence and induced triplet pairing.

Contribution

It introduces a numerical approach using the Hubbard model and Bogoliubov de Gennes equations to analyze proximity effects at such interfaces, highlighting coexistence and triplet pairing phenomena.

Findings

Superconducting order parameter and magnetization coexist near the interface.

Spatial variation of magnetization induces spin-triplet p-wave component.

Local density of states shows characteristic features near the interface.

Abstract

We study the proximity effects near the interface between a d-wave superconductor (S) and a ferromagnet (F) or an antiferromagnet (AF). The S-side (F and AF-side) is described by the attractive (repulsive) Hubbard model, and the Bogoliubov de Gennes equation derived within the Hartree-Fock approximation is solved numerically. The superconducting order parameter and the magnetization (m) can coexist near the interface, and the spatial variation of m induces the spin-triplet p-wave component in both F and AF cases. The local density of states is also calculated and discussed.