Ferroelectric Phase Transitions in a Lattice Pseudo-Jahn-Teller Model
classification
❄️ cond-mat
keywords
pseudo-jahn-tellerferroelectriclatticemodelanalyzedantiferroelectriccouplingfound
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A lattice generalization of the $(b_{1u}\oplus b_{2g})\otimes b_{3u}$ pseudo-Jahn-Teller model is analyzed within mean-field theory. Ferroelectric or antiferroelectric ground states are found for sufficiently large pseudo-Jahn-Teller coupling.
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