English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Starting from the irreducible representations of the group of the wave vectorwe construct the spin wave functions consistent with inversion symmetry,neglected in the usual representation analysis. We obtain the relation betweenthe basis functions of different members of the star of the wave vector. Weintroduce order parameters and determine their transformation properties underthe operations of the space group of the paramagnetic crystal. The results areapplied to construct terms in the magnetoelectric interaction which arequadratic and quartic in the magnetic order parameters. The higher ordermagnetoelectric interactions can in principle induce components of thespontaneous polarization which are not allowed by the lowest ordermagnetoelectric interaction. We also obtain the relation between the spin wavefunctions of the incommensurate phase and those of the commensurate phase whichlead to analogous relations between the order parameters of these two phases.

Effect of Inversion Symmetry on Incommensurate Order in Multiferroic RMn2O5, R=rare earth