Intrinsic antiferromagnetic multimeronic N\'eel spin-textures in ultrathin films

TL;DR

This paper predicts intrinsic antiferromagnetic multimeronic Neel spin-textures in ultrathin films, revealing their stability and potential for spintronic applications through first-principles simulations.

Contribution

It introduces the concept of frustrated multimeronic spin-textures in AFM materials, a novel topological structure not previously observed.

Findings

Intrinsic AFM multimeronic structures predicted in Mn/Ir(111) and Mn/Pd films

Multimerons can carry distinct topological charges and form stable sequences

Potential applications in AFM-based spintronic devices

Abstract

The realization of topological antiferromagnetic (AFM) solitons in real materials is a major goal towards their use in information technology. While they bear various advantages with respect to their ferromagnetic cousins, their observation is scarce. Utilizing first-principles simulations, here we predict new chiral particles in the realm of AFM topological magnetism, frustrated multimeronic spin-textures hosted by a N\'eel magnetic state, arising in single Mn layers directly grown on Ir(111) surface or interfaced with Pd-based films. These topological structures are intrinsic, i.e. they form in a single AFM material, can carry distinct topological charges and can combine in various multimeronic sequences with enhanced stability against external magnetic fields. We envision the frustrated N\'eel AFM multimerons as exciting highly-sought after AFM solitons having the potential to be utilized in novel spintronic devices hinging on non-synthetic AFM quantum materials.