The study “Driving Floquet physics with excitonic fields” has been published in Nature Physics, reporting a major result for the research group of the Department of Physics: the experimental confirmation of a theoretical prediction formulated in 2019.
Excitons can drive Floquet states in a monolayer semiconductor — giving effects that are ~100x stronger and persist longer than conventional light-driven Floquet engineering. This opens a new route to control and study nonequilibrium quantum phases using excitons instead of intense laser fields.
The distinctive ARPES signature of these phases — and their intriguing connection to the BEC–BCS crossover — was investigated in earlier theoretical from Gianluca Stefanucci, Enrico Perfetto, Davide Sangalli and Andrea Marini [Phys. Rev. Materials 3, 124601 (2019)], but had remained elusive until now. This study, conceived and designed by Keshav Dani and Felipe da Jornada, presents a striking experimental realization corroborated by state-of-the-art ab initio simulations -- a beautiful example of advanced theory meeting cutting-edge experiment.
Link to the paper
Excitons can drive Floquet states in a monolayer semiconductor — giving effects that are ~100x stronger and persist longer than conventional light-driven Floquet engineering. This opens a new route to control and study nonequilibrium quantum phases using excitons instead of intense laser fields.
The distinctive ARPES signature of these phases — and their intriguing connection to the BEC–BCS crossover — was investigated in earlier theoretical from Gianluca Stefanucci, Enrico Perfetto, Davide Sangalli and Andrea Marini [Phys. Rev. Materials 3, 124601 (2019)], but had remained elusive until now. This study, conceived and designed by Keshav Dani and Felipe da Jornada, presents a striking experimental realization corroborated by state-of-the-art ab initio simulations -- a beautiful example of advanced theory meeting cutting-edge experiment.
Link to the paper
