Tailoring photostriction via superlattices engineering
Abstract
We report systematic first-principles investigation of light-induced mechanical deformations in monodomain (PbTiO$_{3}$)$_{n}$/(SrTiO$_{3}$)$_{n}$ superlattices ($n=1-5$). We reveal that photostriction in these heterostructures quantitatively and qualitatively depends on the chemical period $n$. Specifically, we show that by changing the chemical period, we can induce $\textit {positive}$ or $\textit {negative}$ photostriction. We also present a simple analytical model to account for the calculated deformations. Our findings indicate that superlattices architectures may be key to design novel optomechanical applications.
- Publication:
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arXiv e-prints
- Pub Date:
- July 2024
- DOI:
- 10.48550/arXiv.2408.00101
- arXiv:
- arXiv:2408.00101
- Bibcode:
- 2024arXiv240800101D
- Keywords:
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- Condensed Matter - Materials Science;
- Condensed Matter - Mesoscale and Nanoscale Physics