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arXiv · 2408.00105

Tuning photostriction in (PbTiO$_{3}$)$_{n}$/(SrTiO$_{3}$)$_{m}$ superlattices via chemical composition: An $\textit{ab-initio}$ study

Carmel Dansou·Charles Paillard·Laurent Bellaiche
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Abstract

Light-induced mechanical deformations in single-domain (PbTiO$_{3}$)$_{n}$/(SrTiO$_{3}$)$_{m}$ superlattices were simulated using first-principle calculations. By varying the chemical fraction PbTiO$_{3}$, we discover that these heterostructures' photostrictive behavior can be tuned quantitatively and qualitatively. Additionally, we present simple analytical models to explain the calculated deformations and predict a critical PbTiO$_{3}$ fraction with no photostriction. In addition to the report in [1], our results present another way for tuning the photostrictive behavior of (PbTiO$_{3}$)$_{n}$/(SrTiO$_{3}$)$_{m}$ superlattices, which could be utilized for innovative optomechanical applications.

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Carmel Dansou, Charles Paillard, Laurent Bellaiche. 2024-07-31. Tuning photostriction in (PbTiO$_{3}$)$_{n}$/(SrTiO$_{3}$)$_{m}$ superlattices via chemical composition: An $\textit{ab-initio}$ study. https://arxiv.org/abs/2408.00105

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