Magnetic frustration and ferroelectricity
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If you have a question about this talk, please contact Michael Sutherland.
The search for multiferroic materials, where ferroelectricity and
magnetism are coupled, has a long history. Until recently it was
believed that these two orders rarely coexist and the interplay between
them is weak. The breakthrough occurred with the discovery of frustrated
magnets showing strong sensitivity of electric polarization and
dielectric constant to applied magnetic fields. In my talk I will focus
on the relationship between magnetic frustration and ferroelectricity,
and discuss microscopic mechanisms inducing electric polarization in
magnetically ordered states as well as phenomenological description of
spectacular effects observed in frustrated magnets. I will also explore
the possibility to find similar phenomena in thin ferromagnetic films,
where electric polarization can be induced by domain wall patterns.
This talk is part of the Quantum Matter Seminar series.
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