Control of intervalley scattering in Bi$_2$Te$_3$ via temperature-dependent band renormalization
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2025
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866915807622070272 |
|---|---|
| author | Jabed, A. Goto, F. Frimpong, B. Armanno, D. Longa, A. Michiardi, M. Damascelli, A. Hofmann, P. Jargot, G. Ibrahim, H. Légaré, F. Gauthier, N. Beaulieu, S. Boschini, F. |
| author_facet | Jabed, A. Goto, F. Frimpong, B. Armanno, D. Longa, A. Michiardi, M. Damascelli, A. Hofmann, P. Jargot, G. Ibrahim, H. Légaré, F. Gauthier, N. Beaulieu, S. Boschini, F. |
| contents | The control of out-of-equilibrium electron dynamics in topological insulators is essential to unlock their potential in next-generation quantum technologies. However, the role of temperature on the renormalization of the electronic band structure and, consequently, on electron scattering processes is still elusive. Here, using high-resolution time- and angle-resolved photoemission spectroscopy (TR-ARPES), we show that even a modest ($\sim$15 meV) renormalization of the conduction band of Bi$_2$Te$_3$ can critically affect bulk and surface electron scattering processes. Supported by a kinetic Monte Carlo toy-model, we show that temperature-induced changes in the bulk band structure modulate the intervalley electron-phonon scattering rate, reshaping the out-of-equilibrium response. This work establishes temperature as an effective control knob for engineering scattering pathways in topological insulators. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_03251 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Control of intervalley scattering in Bi$_2$Te$_3$ via temperature-dependent band renormalization Jabed, A. Goto, F. Frimpong, B. Armanno, D. Longa, A. Michiardi, M. Damascelli, A. Hofmann, P. Jargot, G. Ibrahim, H. Légaré, F. Gauthier, N. Beaulieu, S. Boschini, F. Strongly Correlated Electrons Materials Science The control of out-of-equilibrium electron dynamics in topological insulators is essential to unlock their potential in next-generation quantum technologies. However, the role of temperature on the renormalization of the electronic band structure and, consequently, on electron scattering processes is still elusive. Here, using high-resolution time- and angle-resolved photoemission spectroscopy (TR-ARPES), we show that even a modest ($\sim$15 meV) renormalization of the conduction band of Bi$_2$Te$_3$ can critically affect bulk and surface electron scattering processes. Supported by a kinetic Monte Carlo toy-model, we show that temperature-induced changes in the bulk band structure modulate the intervalley electron-phonon scattering rate, reshaping the out-of-equilibrium response. This work establishes temperature as an effective control knob for engineering scattering pathways in topological insulators. |
| title | Control of intervalley scattering in Bi$_2$Te$_3$ via temperature-dependent band renormalization |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2506.03251 |