YRLG Workshop: Correlation and Topology in magnetic materials, July 16th - 18th 2024
Xanthe Verbeek
We study the structural, electronic, and magnetic properties of interfaces between two easy-axis antiferromagnets, Cr2O3 and -Fe2O3. Cr2O3 is the prototypical linear magnetoelectric, in which an applied magnetic field induces an electric polarization, whereas isostructural -Fe2O3 has a different antiferromagnetic ordering that does not allow a linear magnetoelectric response. We use density functional theory to study crystallographically distinct interface environments and extract magnetic interaction parameters, which we input into atomistic spin dynamics simulations to determine the finite-temperature magnetic properties. We find interfacial magnetizations and antiferromagnetic domain orderings that are strongly interface-structure dependent.