Manylion Llyfryddiaeth
| Teitl: |
Interaction Effects on the Electronic Floquet Spectra: Excitonic Effects |
| Awduron: |
Xiao, Teng, Huang, Tsan, Bao, Changhua, Sun, Zhiyuan |
| Blwyddyn Cyhoeddi: |
2025 |
| Casgliad: |
Condensed Matter
Physics (Other)
Quantum Physics |
| Termau Pwnc: |
Condensed Matter - Other Condensed Matter, Condensed Matter - Quantum Gases, Condensed Matter - Statistical Mechanics, Physics - Optics, Quantum Physics |
| Disgrifiad: |
Floquet engineering of electronic states by light is a central topic in modern experiments. However, the impact of many-body interactions on the single-electron properties remains unclear in this non-equilibrium situation. We propose that interaction effects could be reasonably understood by performing perturbative expansion in both the pump field and the electron-electron interaction when computing physical quantities. As an example, we apply this approach to semiconductors and show analytically that excitonic effects, i.e., effects of electron-hole interaction, lead to dramatic corrections to the single-electron Floquet spectra even when the excitons are only virtually excited by the pump light. We compute these effects in phosphorene and monolayer MoS$_2$ for time- and angle-resolved photoemission spectroscopy (Tr-ARPES) and ultrafast optical experiments. |
| Math o Ddogfen: |
Working Paper |
| URL mynediad: |
http://arxiv.org/abs/2505.07428 |
| Cyfeirnod: |
edsarx.2505.07428 |
| Cronfa ddata: |
arXiv |