Aeschlimann, Sven and Sato, Shunsuke A. and Krause, Razvan and Chavez-Cervantes, Mariana and De Giovannini, Umberto and Huebener, Hannes and Forti, Stiven and Coletti, Camilla and Hanff, Kerstin and Rossnagel, Kai and Rubio, Angel and Gierz, Isabella (2021) Survival of Floquet-Bloch States in the Presence of Scattering. NANO LETTERS, 21 (12). pp. 5028-5035. ISSN 1530-6984, 1530-6992
Full text not available from this repository. (Request a copy)Abstract
Floquet theory has spawned many exciting possibilities for electronic structure control with light, with enormous potential for future applications. The experimental demonstration in solids, however, remains largely unrealized. In particular, the influence of scattering on the formation of Floquet- Bloch states remains poorly understood. Here we combine time-and angle-resolved photoemission spectroscopy with time-dependent density functional theory and a two-level model with relaxation to investigate the survival of Floquet-Bloch states in the presence of scattering. We find that Floquet-Bloch states will be destroyed if scattering-activated by electronic excitations-prevents the Bloch electrons from following the driving field coherently. The two-level model also shows that Floquet-Bloch states reappear at high field intensities where energy exchange with the driving field dominates over energy dissipation to the bath. Our results clearly indicate the importance of long scattering times combined with strong driving fields for the successful realization of various Floquet phenomena.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Floquet-Bloch states; dissipation; time- and angle-resolved photoemission spectroscopy; time-dependent density functional theory; driven two-level system with dissipation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Sep 2022 11:25 |
| Last Modified: | 06 Sep 2022 11:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47273 |
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