Micromagnetic modelling and imaging of vortex|merons structures in an oxide|metal heterostructure

Abstract

Using micromagnetic simulations, we have modelled the formation of imprinted merons and anti-merons in cobalt overlayers of different thickness (1-8 nm), stabilised by interfacial exchange with antiferromagnetic vortices in $\alpha$-Fe2O3. Structures similar to those observed experimentally could be obtained with reasonable exchange parameters, also in the presence of surface roughness. We produce simulated meron|antimeron images by magnetic force microscopy (MFM) and nitrogen-vacancy (N-V) centre microscopy, and established signatures of these topological structures in different experimental configurations.

11 pages, 7 figures, Published in Physical Review B, 26 February 2020

References in corpus (5)

• Skyrmions in Magnetic Multilayers
• Real-space imaging of non-collinear antiferromagnetic order with a single spin magnetometer
• Observation of magnetic vortex pairs at room temperature in a planar α-Fe2O3/Co heterostructure
• A light induced metastable magnetic texture uncovered by in-situ Lorentz microscopy
• Skyrmions in magnetic materials

Cited by in corpus (4)

• Antiferromagnetic Half-skyrmions and Bimerons at room temperature
• Skyrmionics in correlated oxides
• A route towards stable homochiral topological textures in A-type antiferromagnets
• Multi-Meron Interactions and Statistics in Two-Dimensional Materials