# Conservation of spin supercurrents in superconductors

## TL;DR

This paper shows that spin supercurrents in superconductors are preserved despite impurity scattering, unlike regular spin currents, which could enhance superconducting spintronic device performance.

## Contribution

It reveals the fundamental conservation of spin supercurrents in superconductors even with magnetic impurities or spin-orbit effects, a novel insight for spintronics.

## Key findings

- Spin supercurrents are conserved in superconductors despite impurity scattering.
- Conventional spin currents decay with magnetic impurities or spin-orbit coupling.
- Implications for superconducting spintronic hybrid structures.

## Abstract

We demonstrate that spin supercurrents are conserved upon transmission through a conventional superconductor, even in the presence of spin-dependent scattering by impurities with magnetic moments or spin-orbit coupling. This is fundamentally different from conventional spin currents, which decay in the presence of such scattering, and this has important implications for the usage of superconducting materials in spintronic hybrid structures.