Magnetoelectric Control of Toroidal Moment in Ferroaxial Crystal PbMn$_{2}$Ni$_{6}$Te$_{3}$O$_{18}$

TL;DR

This paper demonstrates the control of magnetic toroidal moments in a ferroaxial crystal using electric and magnetic fields, revealing intrinsic couplings and visualizing ferrotoroidic domains through directional dichroism.

Contribution

It introduces a novel method for controlling and visualizing magnetic toroidal moments in ferroaxial materials, advancing understanding of ferroaxial ordering.

Findings

Successful visualization of ferrotoroidic domains via directional dichroism

Demonstration of electric and magnetic field control of magnetic toroidal orientation

Identification of coupling among magnetic toroidal moment, ferroaxial moment, and monopoles

Abstract

Ferroic multipole orders break some symmetry and often activate unique physical properties, such as nonreciprocal directional dichroism and linear magnetoelectric effects. Here, we demonstrate the control of magnetic toroidal orientation in PbMn$_{2}$Ni$_{6}$Te$_{3}$O$_{18}$ through the application of electric and magnetic fields in two distinct configurations. Through directional dichroism, we successfully visualize magnetic ferrotoroidic domains, establishing the intrinsic coupling among magnetic toroidal moment, crystallographic ferroaxial moment, and magnetoelectric monopoles. Our findings not only present an effective pathway for controlling magnetic toroidal moment but also provide a novel approach for investigating ferroaxial ordering.