TY - JOUR
T1 - Spin-state studies with XES and RIXS: From static to ultrafast
AU - Vankó, György
AU - Bordage, Amélie
AU - Glatzel, Pieter
AU - Gallo, Erik
AU - Rovezzi, Mauro
AU - Gawelda, Wojciech
AU - Galler, Andreas
AU - Bressler, Christian
AU - Doumy, Gilles
AU - March, Anne Marie
AU - Kanter, Elliot P.
AU - Young, Linda
AU - Southworth, Stephen H.
AU - Canton, Sophie E.
AU - Uhlig, Jens
AU - Smolentsev, Grigory
AU - Sundström, Villy
AU - Haldrup, Kristoffer
AU - Brandt van Driel, Tim
AU - Nielsen, Martin Meedom
AU - Kjaer, Kasper S.
AU - Lemke, Henrik T.
PY - 2013
Y1 - 2013
N2 - We report on extending hard X-ray emission spectroscopy (XES) along with resonant inelastic X-ray scattering (RIXS) to study ultrafast phenomena in a pump-probe scheme at MHz repetition rates. The investigated systems include low-spin (LS) FeII complex compounds, where optical pulses induce a spin-state transition to their (sub)nanosecond-lived high-spin (HS) state. Time-resolved XES clearly reflects the spin-state variations with very high signal-to-noise ratio, in agreement with HS–LS difference spectra measured at thermal spin crossover, and reference HS–LS systems in static experiments, next to multiplet calculations. The 1s2p RIXS, measured at the Fe 1s pre-edge region, shows variations after laser excitation, which are consistent with the formation of the HS state. Our results demonstrate that X-ray spectroscopy experiments with overall rather weak signals, such as RIXS, can now be reliably exploited to study chemical and physical transformations on ultrafast time scales.
AB - We report on extending hard X-ray emission spectroscopy (XES) along with resonant inelastic X-ray scattering (RIXS) to study ultrafast phenomena in a pump-probe scheme at MHz repetition rates. The investigated systems include low-spin (LS) FeII complex compounds, where optical pulses induce a spin-state transition to their (sub)nanosecond-lived high-spin (HS) state. Time-resolved XES clearly reflects the spin-state variations with very high signal-to-noise ratio, in agreement with HS–LS difference spectra measured at thermal spin crossover, and reference HS–LS systems in static experiments, next to multiplet calculations. The 1s2p RIXS, measured at the Fe 1s pre-edge region, shows variations after laser excitation, which are consistent with the formation of the HS state. Our results demonstrate that X-ray spectroscopy experiments with overall rather weak signals, such as RIXS, can now be reliably exploited to study chemical and physical transformations on ultrafast time scales.
KW - Molecular switching
KW - Time-resolved spectroscopy
KW - X-ray spectroscopy
KW - Spin transition
KW - Photoinduced transition
KW - Ultrafast phenomena
KW - Pump-probe experiments
U2 - 10.1016/j.elspec.2012.09.012
DO - 10.1016/j.elspec.2012.09.012
M3 - Journal article
SN - 0368-2048
VL - 188
SP - 166
EP - 171
JO - Journal of Electron Spectroscopy and Related Phenomena
JF - Journal of Electron Spectroscopy and Related Phenomena
ER -