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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2508.21612 |
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| _version_ | 1866915470309851136 |
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| author | Alemayehu, Rekikua Zeuschner, Steffen von Reppert, Alexander Roessle, Matthias Alexe, Marin Bargheer, Matias |
| author_facet | Alemayehu, Rekikua Zeuschner, Steffen von Reppert, Alexander Roessle, Matthias Alexe, Marin Bargheer, Matias |
| contents | We demonstrate that switching of ferroelectric thin-films sandwiched between metallic electrodes can be controlled by laser-assisted heating, reminiscent of heat-assisted magnetic recording. We employ electrical switching cycles that quantify the electrically switchable remanent polarization $P_\mathrm{r}$ and show that 300\,ns voltage pulses alone change the polarization by less than $ΔP<P_\mathrm{r}$. Transient heating of the metallic top electrode by synchronized ns laser-pulses induces a reversal $ΔP^\mathrm{L}>P_\mathrm{r}$ of the average polarization. The transient average temperature modeled by the heat equation can rationalize the polarization change observed for different relative timing $Δt$ of the laser pulse, if it arrives before the electrical pulse. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_21612 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Rapid heat assisted polarization reversal in ferroelectric thin films Alemayehu, Rekikua Zeuschner, Steffen von Reppert, Alexander Roessle, Matthias Alexe, Marin Bargheer, Matias Materials Science We demonstrate that switching of ferroelectric thin-films sandwiched between metallic electrodes can be controlled by laser-assisted heating, reminiscent of heat-assisted magnetic recording. We employ electrical switching cycles that quantify the electrically switchable remanent polarization $P_\mathrm{r}$ and show that 300\,ns voltage pulses alone change the polarization by less than $ΔP<P_\mathrm{r}$. Transient heating of the metallic top electrode by synchronized ns laser-pulses induces a reversal $ΔP^\mathrm{L}>P_\mathrm{r}$ of the average polarization. The transient average temperature modeled by the heat equation can rationalize the polarization change observed for different relative timing $Δt$ of the laser pulse, if it arrives before the electrical pulse. |
| title | Rapid heat assisted polarization reversal in ferroelectric thin films |
| topic | Materials Science |
| url | https://arxiv.org/abs/2508.21612 |