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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2603.25521 |
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Table of Contents:
- Ferroelectric materials with built-in electric fields are useful for ultrafast electronics and solar cells. Using ultrafast electron diffraction, we here report that ferroelectric BaTiO$_3$ reacts to light with a polarization-sensitive electron-phonon coupling. Excited electrons relax faster into phonons and temperature when the optical electric field aligns to the ferroelectric polarization. Also, ultrafast electron electrometry visualizes the motion of photo-excited electron-hole pairs in presence of the ferroelectric field.