# Electrically-driven domain wall motion in a ferromagnetic Kagome lattice

## TL;DR

This paper presents a theoretical study of electric-field-induced domain wall motion in a ferromagnetic Kagome lattice, revealing a low-dissipation mechanism that enables faster domain wall velocities than in traditional metals.

## Contribution

It introduces a novel mechanism for domain wall motion driven by electric fields in a quantum anomalous Hall state without requiring current flow.

## Key findings

- Electric charge accumulates near the domain wall under an electric field.
- Domain walls can be driven with low energy dissipation.
- Domain wall velocity is estimated to be faster than in conventional metals.

## Abstract

We theoretically study domain wall motion induced by an electric field in the quantum anomalous Hall states on a two-dimensional Kagome lattice with ferromagnetic order and spin-orbit coupling. We show that an electric charge is accumulated near the domain wall which indicates that the electric field drives both the accumulated charge and the domain wall with small energy dissipation. Using the linear response theory we compute the non-equilibrium spin density which exerts a non-adiabatic spin transfer torque on textures of the local magnetization. This torque emerges even when the bulk is insulating and does not require the longitudinal electric current. Finally, we estimate the velocity of domain wall motion in this system, which is faster than that in conventional metals.