About carrier's self-trapping and dynamical Rashba splitting in the two-dimensional hybrid perovskite (BA)$_2$(MA)$_2$Pb$_3$I$_{10}$
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arXiv
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| Format: | Preprint |
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2025
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| author | Qi, W. Ponzoni, S. Huitric, G. Gorelov, V. Pramanik, A. Laplace, Y. Marsi, M. Papalazarou, E. Maehrlein, S. F. Deleporte, E. Mallik, N. Ibrahimi, A. Taleb Bendounan, A. Zheng, K. Pullerits, T. Perfetti, L. |
| author_facet | Qi, W. Ponzoni, S. Huitric, G. Gorelov, V. Pramanik, A. Laplace, Y. Marsi, M. Papalazarou, E. Maehrlein, S. F. Deleporte, E. Mallik, N. Ibrahimi, A. Taleb Bendounan, A. Zheng, K. Pullerits, T. Perfetti, L. |
| contents | Time- and Angle-Resolved Photoelectron Spectroscopy (tr-ARPES) is employed to monitor photoexcited electrons in the two-dimensional hybrid perovskite (BA)$_2$(MA)$_2$Pb$_3$I$_{10}$. Photoelectron intensity maps are in good agreement with ab-initio calculations of the band structure. The effective mass is $-0.18 \pm 0.02 m_e$ and $0.12 \pm 0.02 m_e$ for holes and electrons, respectively. In the photoexcited state, spin-orbit splitting of the conduction band cannot be resolved. This sets the upper bound of photoinduced Rashba coupling to $α_C<2.5$ eVÅ. The correlated electron-hole plasma evolves in Wannier excitons with Bohr radius of 2.8 nm, while no sign of self-trapping in small polarons is found within the investigated time window of up to 120 ps following photoexcitation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_12129 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | About carrier's self-trapping and dynamical Rashba splitting in the two-dimensional hybrid perovskite (BA)$_2$(MA)$_2$Pb$_3$I$_{10}$ Qi, W. Ponzoni, S. Huitric, G. Gorelov, V. Pramanik, A. Laplace, Y. Marsi, M. Papalazarou, E. Maehrlein, S. F. Deleporte, E. Mallik, N. Ibrahimi, A. Taleb Bendounan, A. Zheng, K. Pullerits, T. Perfetti, L. Other Condensed Matter Time- and Angle-Resolved Photoelectron Spectroscopy (tr-ARPES) is employed to monitor photoexcited electrons in the two-dimensional hybrid perovskite (BA)$_2$(MA)$_2$Pb$_3$I$_{10}$. Photoelectron intensity maps are in good agreement with ab-initio calculations of the band structure. The effective mass is $-0.18 \pm 0.02 m_e$ and $0.12 \pm 0.02 m_e$ for holes and electrons, respectively. In the photoexcited state, spin-orbit splitting of the conduction band cannot be resolved. This sets the upper bound of photoinduced Rashba coupling to $α_C<2.5$ eVÅ. The correlated electron-hole plasma evolves in Wannier excitons with Bohr radius of 2.8 nm, while no sign of self-trapping in small polarons is found within the investigated time window of up to 120 ps following photoexcitation. |
| title | About carrier's self-trapping and dynamical Rashba splitting in the two-dimensional hybrid perovskite (BA)$_2$(MA)$_2$Pb$_3$I$_{10}$ |
| topic | Other Condensed Matter |
| url | https://arxiv.org/abs/2508.12129 |