# Dynamics of noncollinear antiferromagnetic textures driven by spin current injection

## TL;DR

This paper develops a theoretical framework to analyze the dynamics of noncollinear antiferromagnetic textures under spin current injection, providing analytical tools and estimates for domain wall velocities in materials like Mn3Ir.

## Contribution

It introduces sine-Gordon type equations for noncollinear antiferromagnets, enabling analytical study of domain wall motion under spin current injection in technologically relevant materials.

## Key findings

- Domain wall velocity estimated at ~1 km/s in Mn3Ir
- Derived equations applicable to Mn3Ir and Mn3Sn
- Analytical approach to domain wall dynamics

## Abstract

We present a theoretical formalism to address the dynamics of textured, noncolliear antiferromagnets subject to spin current injection. We derive sine-Gordon type equations of motion for the antiferromagnets, which are applicable to technologically important antiferromagnets such as Mn3Ir and Mn3Sn, and enables an analytical approach to domain wall dynamics in those materials. We obtain the expression for domain wall velocity, which is estimated to reach around 1 km/s in Mn3Ir by exploiting spin Hall effect with electric current density around 10^11A/m^2.