Directional magnetoelectric effects in MnWO4: magnetic sources of the electric polarization

Abstract

The ferroelectric order and magnetic field induced effects observed in the spiral phase of MnWO4 are described theoretically. It is demonstrated explicitly that the Dzyaloshinskii-Moriya antisymmetric interactions contribute to the correlation between spins and electric dipoles in the incommensurate and commensurate ferroelectric phases of magnetic multiferroics. However, other single-site symmetric interactions are shown to be involved in the magnetoelectric process, suggesting the possible existence of an electric polarization originating from purely symmetric effects.

References in corpus (11)

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Cited by in corpus (7)

• Critical slowing down near the multiferroic phase transition in MnWO${}_4$
• Magnetoelectric effect due to local noncentrosymmetry
• Helicity, anisotropies and their competition in a multiferroic magnet: insight from the phase diagram
• Domain dynamics in LiCuVO${}_4$: Evidence for polarized nanoregions
• Electric polarization of magnetic domain walls in magnetoelectrics
• Single-crystal investigations on the multiferroic material LiFe(WO${}_4$)${}_2$
• Control of a polar order via magnetic field in a vector-chiral magnet