Maklar, Julian and Sarkar, Jit and Dong, Shuo and Gerasimenko, Yaroslav A. and Pincelli, Tommaso and Beaulieu, Samuel and Kirchmann, Patrick S. and Sobota, Jonathan A. and Yang, Shuolong and Leuenberger, Dominik and Moore, Robert G. and Shen, Zhi-Xun and Wolf, Martin and Mihailovic, Dragan and Ernstorfer, Ralph and Rettig, Laurenz (2023) Coherent light control of a metastable hidden state. SCIENCE ADVANCES, 9 (47): eadi4661. ISSN 2375-2548,
Full text not available from this repository. (Request a copy)Abstract
Metastable phases present a promising route to expand the functionality of complex materials. Of particular interest are light-induced metastable phases that are inaccessible under equilibrium conditions, as they often host new, emergent properties switchable on ultrafast timescales. However, the processes governing the trajectories to such hidden phases remain largely unexplored. Here, using time- and angle-resolved photoemission spectroscopy, we investigate the ultrafast dynamics of the formation of a hidden quantum state in the layered dichalcogenide 1T-TaS2 upon photoexcitation. Our results reveal the nonthermal character of the transition governed by a collective charge-density-wave excitation. Using a double-pulse excitation of the structural mode, we show vibrational coherent control of the phase-transition efficiency. Our demonstration of exceptional control, switching speed, and stability of the hidden state are key for device applications at the nexus of electronics and photonics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHASE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Apr 2024 13:00 |
| Last Modified: | 22 Apr 2024 13:00 |
| URI: | https://pred.uni-regensburg.de/id/eprint/62520 |
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