Probing ultrafast non-equilibrium dynamics in an organic-dimer Mott insulator with terahertz-infrared continuum probe pulses
- Resource Type
- Conference
- Authors
- Warawa, Konstantin; Agarmani, Yassine; Schubert, Harald; Dressel, Martin; Lang, Michael; Roskos, Hartmut G.; Thomson, Mark D.
- Source
- 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2023 48th International Conference on. :1-2 Sep, 2023
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Spectroscopy
Perturbation methods
Insulators
Ultrafast optics
Probes
Spectral analysis
Optical pulses
- Language
- ISSN
- 2162-2035
We apply optical-pump terahertz-infrared-probe re- flection spectroscopy to study the non-equilibrium dynamics in the Mott insulator $\kappa-(\mathrm{B}\mathrm{E}\mathrm{D}\mathrm{T}-\mathrm{T}\mathrm{T}\mathrm{F})_{2}\mathrm{C}\mathrm{u}[\mathrm{N}(\mathrm{C}\mathrm{N})_{2}]\mathrm{C}1(\kappa-\mathrm{C}1)$, following intra-molecular electronic excitation of the organic dimers. The perturbation and subsequent relaxation of the correlated electronic system is treated with a global spectral analysis including a bleach of the inter-Hubbard-band transition and a photoinduced low-frequency contribution from the excitations above the Mott gap, providing a more complete picture of the nature of the excited states.