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arXiv · 1001.4005

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

P. Toledano·B. Mettout·W. Schranz·G. Krexner
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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.

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P. Toledano, B. Mettout, W. Schranz, G. Krexner. 2010-01-22. Directional magnetoelectric effects in MnWO4: magnetic sources of the electric polarization. https://doi.org/10.1088/0953-8984%2F22%2F6%2F065901

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