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Local Magnetoelectric Effects as a Predictor of Surface Magnetic Order
Sophie F. Weber, Andrea Urru, Nicola A. Spaldin
We use symmetry analysis and density functional theory to show that changes in magnetic order at a surface with respect to magnetic order in the bulk can be generically determined…
Emergent surface multiferroicity
Sayantika Bhowal, Andrea Urru, Sophie F. Weber +1
We show that the surface of a centrosymmetric, collinear, compensated antiferromagnet, which hosts bulk ferroically ordered magnetic octupoles, exhibits a linear magnetoelectric ef…
Large dynamical magnetic effective charges and anti-magnetoelectricity from spin and orbital origin in multiferroic BiCoO
Maxime Braun, Bogdan Guster, Andrea Urru +2
Using first-principles calculations, we explore the magnetoelectric properties of the room-temperature multiferroic crystal BiCoO. We use both applied magnetic field and finite…