| Description |
Emiliano Principi (Elettra - Sincrotrone Trieste S.C.p.A.) Abstract:
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) |
CMSP Atomistic Simulation Seminar Series: Disruptive ultrafast soft x-ray spectroscopies at the FERMI free electron laser
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