6 papers
Unveiling exciton formation: exploring the early stages in time, energy and momentum domain
Valentina Gosetti, Jorge Cervantes-Villanueva, Selene Mor +9
Resolving the early-stage dynamics of exciton formation following non-resonant photoexcitation in time, energy, and momentum is quite challenging due to their inherently fast times…
Effect of photoinduced screening on the spectroscopic signature of exciton-phonon coupling
Selene Mor, Valentina Gosetti, Vadim F. Agekyan +3
The light-mediated interaction of fermionic and bosonic excitations governs the optoelectronic properties of condensed matter systems. In photoexcited semiconductors, the coupling…
Mott resistive switching initiated by topological defects
Alessandra Milloch, Ignacio Figueruelo-Campanero, Wei-Fan Hsu +11
Resistive switching is the fundamental process that triggers the sudden change of the electrical properties in solid-state devices under the action of intense electric fields. Desp…
The fate of optical excitons in FAPbI3 nanocube superlattices
Alessandra Milloch, Umberto Filippi, Paolo Franceschini +8
Understanding the nature of the photoexcitation and ultrafast charge dynamics pathways in organic halide perovskite nanocubes and their aggregation into superlattices is key for th…
Detection of a coherent excitonic state in the layered semiconductor BiI
Valentina Gosetti, Jorge Cervantes-Villanueva, Davide Sangalli +6
The measurement and manipulation of the coherent dynamics of excitonic states constitute a forefront research challenge in semiconductor optics and in quantum coherence-based proto…
Inhibition of the photoinduced structural phase transition in the excitonic insulator TaNiSe
Selene Mor, Marc Herzog, Johannes Noack +7
Femtosecond time-resolved mid-infrared reflectivity is used to investigate the electron and phonon dynamics occurring at the direct band gap of the excitonic insulator TaNiSe$_…