Ultrafast dynamics and coherent order parameter oscillations under photo-excitation in the excitonic insulator Ta2NiSe5
Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/Gutachten › Beitrag in Konferenzband › Beigetragen › Begutachtung
Beitragende
Abstract
The excitonic insulator (EI) is an intriguing phase of condensed excitons undergoing a Bose-Einstein-Condensation (BEC)-type transition. A prominent candidate has been identified in Ta2NiSe5. Ultrafast spectroscopy allows tracing the coherent response of the EI condensate directly in the time domain. Probing the collective electronic response we can identify fingerprints for the Higgs-amplitude equivalent mode of the condensate. In addition we find a peculiar coupling of the EI phase to a low frequency phonon mode. We will discuss the transient response on multiple energies scales ranging from the exciton dynamics to the coherent THz response of the gap.
Details
| Originalsprache | Englisch |
|---|---|
| Titel | Ultrafast Bandgap Photonics III |
| Redakteure/-innen | Michael K. Rafailov |
| Herausgeber (Verlag) | SPIE - The international society for optics and photonics, Bellingham |
| ISBN (elektronisch) | 9781510617872 |
| Publikationsstatus | Veröffentlicht - 2018 |
| Peer-Review-Status | Ja |
| Extern publiziert | Ja |
Publikationsreihe
| Reihe | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Band | 10638 |
| ISSN | 0277-786X |
Konferenz
| Titel | Ultrafast Bandgap Photonics III 2018 |
|---|---|
| Dauer | 16 - 19 April 2018 |
| Stadt | Orlando |
| Land | USA/Vereinigte Staaten |
Externe IDs
| ORCID | /0000-0001-9862-2788/work/142255351 |
|---|
Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- collective excitation, exciton wave packet, excitonic insulator, non-equilibrium, pump-probe, THz, timedomain, ultrafast