# Antiskyrmions stabilized at interfaces by anisotropic Dzyaloshinskii-Moriya interaction

## TL;DR

This paper demonstrates that antiskyrmions can be stabilized at interfaces in chiral magnets with anisotropic Dzyaloshinskii-Moriya interaction, providing criteria and practical examples for their realization.

## Contribution

It establishes the theoretical possibility of antiskyrmions as energy-minimizing states in chiral magnets and identifies specific interface conditions for their stabilization.

## Key findings

- Antiskyrmions can coexist with skyrmions in certain chiral magnets.
- Practical criteria for stabilizing antiskyrmions at interfaces are derived.
- A Fe/W(110) multilayer is proposed as an experimental platform.

## Abstract

Chiral magnets are an emerging class of topological matter harbouring localized and topologically protected vortex-like magnetic textures called skyrmions, which are currently under intense scrutiny as a new entity for information storage and processing. Here, on the level of micromagnetics we rigorously show that chiral magnets cannot only host skyrmions but also antiskyrmions as least-energy configurations over all non-trivial homotopy classes. We derive practical criteria for their occurrence and coexistence with skyrmions that can be fulfilled by (110)-oriented interfaces in dependence on the electronic structure. Relating the electronic structure to an atomistic spin-lattice model by means of density-functional calculations and minimizing the energy on a mesoscopic scale applying spin-relaxation methods, we propose a double layer of Fe grown on a W(110) substrate as a practical example. We conjecture that ultrathin magnetic films grown on semiconductor or heavy metal substrates with $C_{2v}$ symmetry are prototype classes of materials hosting magnetic antiskyrmions.