Photo-induced electric polirization in hybrid improper ferroelectrics
ORAL
Abstract
Hybrid improper ferroelectrics form a class of materials for which the electric polarization is induced by two octahedral tilting modes, that are in-phase and antiphase tiltings. Interestingly, in conventional ferroelectrics, light has the tendency to suppress electrical polarization while enhancing tiltings. One may thus wonder what is the effect of light on electric polarization in hybrid improper ferroelectrics. Here, we use density functional theory and a novel light-matter ab-initio scheme [Physical Review Letters 123, 087601 (2019)] to address this question. Our study demonstrates that light can be a useful tool to drive and control polarization in original ferroelectric devices.
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Presenters
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Lingyuan Gao
University of Arkansas, University of Pennsylvania
Authors
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Lingyuan Gao
University of Arkansas, University of Pennsylvania
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Charles Paillard
Laboratoire Structures, Propriétés et Modélisation des Solides, CentraleSupélec, CNRS UMR 580, Université Paris-Saclay, 91190 Gif-sur-Yvette, France, University Paris-Saclay, SPMS Centrale Supelec Université Paris Saclay
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Laurent Bellaiche
Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA, University of Arkansas