# Controlling Chiral Domain Walls in Antiferromagnets Using Spin-Wave Helicity

## TL;DR

This paper demonstrates that in biaxial antiferromagnets, spin-wave helicity can precisely control the direction and speed of chiral domain walls, enhancing potential spintronic applications.

## Contribution

It reveals how spin-wave helicity influences domain wall motion in biaxial and uniaxial antiferromagnets, introducing a new method for magnetic control.

## Key findings

- Spin-wave helicity controls domain wall direction and velocity in biaxial antiferromagnets.
- In uniaxial antiferromagnets, the magnonic force is propulsive and helicity-dependent.
- Dzyaloshinskii-Moriya interaction enhances spin-wave-induced domain wall motion.

## Abstract

In antiferromagnets, the Dzyaloshinskii-Moriya interaction lifts the degeneracy of left- and right-circularly polarized spin waves. This relativistic coupling increases the efficiency of spin-wave-induced domain wall motion and leads to higher drift velocities. We show that in biaxial antiferromagnets, the spin-wave helicity controls both the direction and magnitude of the magnonic force on chiral domain walls. By contrast, in uniaxial antiferromagnets, the magnonic force is propulsive with a helicity dependent strength.