3 papers
cond-mat.mtrl-sci2025
Trilinear coupling and toroidicity in multiferroics
Andrea Urru, Alessio Filippetti, Jorge Ãñiguez-Gonzà lez +1
Magnetoelectric responses are related in general to magnetic multipoles, and in particular the off-diagonal linear response is proportional to the toroidization order parameter. In…
cond-mat.mtrl-sci2024
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…
cond-mat.mtrl-sci2024
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…