Scientific Calendar Event

Starts 8 Feb 2023 11:00
Ends 8 Feb 2023 12:00
Central European Time
Hybrid Seminar
Luigi Stasi Seminar Room + Zoom

Emiliano Principi
(Elettra - Sincrotrone Trieste S.C.p.A.)
Significant advances with unconventional extreme ultraviolet (EUV) and soft x-ray spectroscopies have been recently achieved at the FERMI free electron laser in Trieste (Italy).  Time-resolved x-ray absorption spectroscopy (tr-XAS) has been used to explore the sub-picosecond structural and electronic rearrangement in materials under extreme conditions of pressure and temperature driven by intense fs-laser pulses[1].
tr-XAS has been found to be effective also for monitoring the ultrafast charge transfer in photo-excited functional materials[2]. Moreover, it has been successfully employed in combination with impulsive stimulated Raman scattering for revealing the molecular motion in real time with unprecedented elemental and enantiomeric selectivity[3].
High sensitivity to the atomic structure of interfaces in materials has been demonstrated by nonlinear second harmonic spectroscopy in the EUV range[4,5].
This seminar provides an overview on these disruptive experiments carried out at the beamline TIMEX of FERMI, outlining possible challenging developments and future opportunities for scientific research.
[1] Principi, E., Krylow, S., Garcia, M.E., Simoncig, Physical Review Letters 125 ,155703 (2020)
[2] Cresi, J.S.P., Principi, E., Spurio, E., Catone et al. Nano Letters 21, 1729 (2021)
[3] Mincigrucci R., Rouxel J. R., Rossi B., Principi E. et al. Nature Communications 14, 386 (2023)
[4] Lam, R.K., Raj, S.L., Pascal, T.A., Pemmaraju, C.D. et al. Physical Review Letters 120, 023901 (2018)
[5] Schwartz, C.P., Raj, S.L., Jamnuch, S., Hull, C.J., et al. Physical Review Letters 127, 096801 (2021)