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

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Abstract

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) Fe-II 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 Is 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. (C) 2012 Elsevier B.V. All rights reserved.

Detaljer

Författare
  • Gyoergy Vanko
  • Amelie Bordage
  • Pieter Glatzel
  • Erik Gallo
  • Mauro Rovezzi
  • Wojciech Gawelda
  • Andreas Galler
  • Christian Bressler
  • Gilles Doumy
  • Anne Marie March
  • Elliot P. Kanter
  • Linda Young
  • Stephen H. Southworth
  • Sophie Canton
  • Grigory Smolentsev
  • Kristoffer Haldrup
  • Tim Brandt van Driel
  • Martin M. Nielsen
  • Kasper S. Kjaer
  • Henrik T. Lemke
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Naturvetenskap
  • Fysik
  • Atom- och molekylfysik och optik

Nyckelord

Originalspråkengelska
Sidor (från-till)166-171
TidskriftJournal of Electron Spectroscopy and Related Phenomena
Volym188
StatusPublished - 2013
PublikationskategoriForskning
Peer review utfördJa