Coupling of order parameters, chirality, and interfacial structures in multiferroic materials

Sergio Conti, Stefan Müller, Arkady Poliakovsky, Ekhard K.H. Salje

Research output: Contribution to journalArticlepeer-review

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Abstract

We study optimal interfacial structures in multiferroic materials with a biquadratic coupling between two order parameters. We discover a new duality relation between the strong coupling and the weak coupling regime for the case of isotropic gradient terms. We analyze the phase diagram depending on the coupling constant and anisotropy of the gradient term, and show that in a certain regime the secondary order parameter becomes activated only in the interfacial region.

Original languageEnglish
Article number142203
JournalJournal of Physics Condensed Matter
Volume23
Issue number14
DOIs
StatePublished - 13 Apr 2011
Externally publishedYes

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