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

Autor(en)

Pierre Toledano, Bruno Mettout, Wilfried Schranz, Gerhard Krexner

Abstrakt

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.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Université de Picardie Jules Verne

Journal

Journal of Physics: Condensed Matter

Band

22

Anzahl der Seiten

6

ISSN

0953-8984

DOI

https://doi.org/10.1088/0953-8984/22/6/065901

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/2c09ed82-a4f1-482a-9f96-c1274d1052cc