Observation of universal topological magnetoelectric switching in multiferroic GdMn2O5
Abstract
Topological magnetoelectricity was recently revealed as an emergent topic, which opens a unique route to precisely control magnetoelectric functionality. Here we report the synchronous magnetic-electric-cycle operation of topological magnetoelectric switching in GdMn2O5. Compared with pure magnetic-cycle operation, this topological winding can be accessed in a much broader parameter space, i.e. orientation of magnetic field is not limited to the magic angle and the effect can persist up to the Curie temperature. The fine tuning of free energy landscape is responsible to this topological behavior.
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