Interplay between ferromagnetism and superconductivity in tunneling currents

TL;DR

This paper investigates how ferromagnetism and superconductivity interact in tunneling currents between spin-triplet superconductors, revealing a way to control dissipationless charge and spin currents via magnetization orientation.

Contribution

It introduces a model showing the interplay between ferromagnetism and superconductivity affecting the Josephson effect in spin-triplet superconductors.

Findings

Magnetization direction influences tunneling currents.

Tunable dissipationless charge and spin currents are possible.

Novel Josephson effect due to ferromagnetism-superconductivity interplay.

Abstract

We study tunneling currents in a model consisting of two non-unitary ferromagnetic spin-triplet superconductors separated by a thin insulating layer. We find a novel interplay between ferromagnetism and superconductivity, manifested in the Josephson effect. This offers the possibility of tuning dissipationless currents of charge and spin in a well-defined manner by adjusting the magnetization direction on either side of the junction.