Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 22, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/22/6/065901
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Funding
- Austrian FWF [P19284-N20]
- University of Vienna through the Focus Research Area Materials Science
- Austrian Science Fund (FWF) [P19284] Funding Source: Austrian Science Fund (FWF)
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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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