Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets

Details Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets Clamping of ferroelectric and ferromagnetic domain walls in conical spiral magnets

2009-06-29

arxiv.org/abs/0906.5298v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

We study the structure of domain walls in multiferroic magnets with the conical spiral ordering. We formulate a simple spin model which has a conical spiral ground state in absence of magnetic anisotropies. We find a transition from the regime where ferromagnetic and ferroelectric domain walls are clamped to the regime where they are decoupled and derive a continuum model describing rotation of the spiral plane at the domain wall. The importance of these results for the switching phenomena observed in CoCr2O4 is discussed.

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