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15 February 2025
 
  » arxiv » 2301.01425

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Renormalizing Antiferroelectric Nanostripes in $β'-mathrm{In}_{2}mathrm{Se}_{3}$ via Optomechanics
Zihang Wu ; Kun Liu ; Yan Sun ; Jian Zhou ;
Date 4 Jan 2023
AbstractAntiferroelectric (AFE) materials have received tremendous attention owing to their high energy conversion efficiency and good tunability. Recently, an exotic two-dimensional (2D) AFE material, $eta’-mathrm{In}_{2}mathrm{Se}_{3}$ monolayer that could host atomically thin AFE nanostripe domains has been experimentally synthesized and theoretically examined. In this work, we apply first-principles calculations and theoretical estimations to predict that light irradiation can control the nanostripe width of such a system. We suggest that an intermediate near-infrared light (below bandgap) could effectively harness the thermodynamic Gibbs free energy, and the AFE nanostripe width will gradually reduce. We also propose to use an above bandgap linearly polarized light to generate AFE nanostripespecific photocurrent, providing an all-optical pump-probe setup for such AFE nanostripe width phase transitions.
Source arXiv, 2301.01425
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