# Superconducting spin valves controlled by spiral re-orientation in B20-family magnets

## TL;DR

This paper introduces a superconducting spin-triplet valve using B20-family magnets, where re-orienting the spiral magnetic order controls superconducting correlations, enabling potential cryogenic memory applications.

## Contribution

It presents a novel single-layer magnetic superconductor device that uses spiral re-orientation to control spin-triplet correlations, improving fabrication and control over previous designs.

## Key findings

- Re-orienting spiral magnetic order modulates superconducting correlations.
- The device exhibits a noticeable spin-valve switching effect.
- Potential use as a cryogenic magnetic memory element.

## Abstract

We propose a superconducting spin-triplet valve, which consists of a superconductor and an itinerant magnetic material, with the magnet showing an intrinsic non-collinear order characterized by a wave vector that may be aligned in a few equivalent preferred directions under control of a weak external magnetic field. Re-orienting the spiral direction allows one to controllably modify long-range spin-triplet superconducting correlations, leading to spin-valve switching behavior. Our results indicate that the spin-valve effect may be noticeable. This bilayer may be used as a magnetic memory element for cryogenic nanoelectronics. It has the following advantages in comparison to superconducting spin valves proposed previously: (i) it contains only one magnetic layer, which may be more easily fabricated and controlled, (ii) its ground states are separated by a potential barrier, which solves the "half-select" problem of the addressed switch of memory elements.