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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2309.16209 |
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| _version_ | 1866916231377846272 |
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| author | Zhilyaev, Petr Brekhov, Kirill Mishina, Elena Tantardini, Christian |
| author_facet | Zhilyaev, Petr Brekhov, Kirill Mishina, Elena Tantardini, Christian |
| contents | The challenge of achieving ultrafast switching of electric polarization in ferroelectric materials remains unsolved, as there is no experimental evidence of such switching to date. In this study, we have developed an enhanced model that describes switching within a two-dimensional space of generalized coordinates at THz pulses. Our findings indicate that stable switching in barium titanate cannot be achieved through a single linearly polarized pulse. When the intensity of the linearly polarized pulse reaches a certain threshold, the sample experiences depolarization, but not stable switching. Our study also reveals that phonon friction plays a minor role in the switching dynamics and provides an estimate of the optimal parameters of the perturbing pulse with the lowest intensity that results in depolarization of an initially polarized sample. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_16209 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Ultrafast Polarization Switching in BaTiO$_3$ Nanomaterial: Combined DFT and Coupled Oscillator Study Zhilyaev, Petr Brekhov, Kirill Mishina, Elena Tantardini, Christian Materials Science Optics The challenge of achieving ultrafast switching of electric polarization in ferroelectric materials remains unsolved, as there is no experimental evidence of such switching to date. In this study, we have developed an enhanced model that describes switching within a two-dimensional space of generalized coordinates at THz pulses. Our findings indicate that stable switching in barium titanate cannot be achieved through a single linearly polarized pulse. When the intensity of the linearly polarized pulse reaches a certain threshold, the sample experiences depolarization, but not stable switching. Our study also reveals that phonon friction plays a minor role in the switching dynamics and provides an estimate of the optimal parameters of the perturbing pulse with the lowest intensity that results in depolarization of an initially polarized sample. |
| title | Ultrafast Polarization Switching in BaTiO$_3$ Nanomaterial: Combined DFT and Coupled Oscillator Study |
| topic | Materials Science Optics |
| url | https://arxiv.org/abs/2309.16209 |