Observation of universal topological magnetoelectric switching in multiferroic GdMn2O5

TL;DR

This paper reports the observation of topological magnetoelectric switching in GdMn2O5, demonstrating a robust and broad parameter space operation that persists up to the Curie temperature, revealing new control mechanisms for magnetoelectric functionality.

Contribution

It introduces the experimental observation of topological magnetoelectric switching in GdMn2O5, expanding understanding of topological effects in multiferroics.

Findings

Topological magnetoelectric switching observed in GdMn2O5.

Switching persists over a broad magnetic field orientation range.

Effect remains up to the Curie temperature.

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.