Details

Autor(en) / Beteiligte

• Vankó, György
• Bordage, Amélie
• Glatzel, Pieter
• Gallo, Erik
• Rovezzi, Mauro
• Gawelda, Wojciech
• Galler, Andreas
• Bressler, Christian
• Doumy, Gilles
• March, Anne Marie
• Kanter, Elliot P.
• Young, Linda
• Southworth, Stephen H.
• Canton, Sophie E.
• Uhlig, Jens
• Smolentsev, Grigory
• Sundström, Villy
• Haldrup, Kristoffer
• van Driel, Tim Brandt
• Nielsen, Martin M.
• Kjaer, Kasper S.
• Lemke, Henrik T.

Titel

Spin-state studies with XES and RIXS: From static to ultrafast

Ist Teil von

• Journal of electron spectroscopy and related phenomena, 2013-06, Vol.188, p.166-171

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2013

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• ► We study light-induced spin-state transition of Fe(II) complexes in solution. ► Laser-pump-X-ray-probe spectroscopy is extended to MHz repetition rates. ► XES and RIXS compare well with the static spectra at thermal spin transition. ► The typical assumptions used in XES line shape analysis are validated. 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.