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Article Dans Une Revue Physical Review B Année : 2023

Photoinduced control of ferroelectricity in hybrid-improper ferroelectric superlattices

Résumé

We reveal a photo-induced control of ferroelectricity in hybrid-improper ferroelectric superlattices, using ab-initio theory. Along with a notable photostriction effect, thermalized carriers from photo-excitation affect octahedral tiltings along different directions. A trilinear coupling between antipolar and tilting modes drives corresponding cationic displacements, and this results in a decrease in polarization under light. Together with recent experimental evidences, our study therefore demonstrates that light is a viable route to engineer functionalities in materials.
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Dates et versions

hal-04057967 , version 1 (04-04-2023)

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Lingyuan Gao, Laurent Bellaiche, Charles Paillard. Photoinduced control of ferroelectricity in hybrid-improper ferroelectric superlattices. Physical Review B, 2023, 107 (10), pp.104109. ⟨10.1103/PhysRevB.107.104109⟩. ⟨hal-04057967⟩
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