4.2 Article

Out-of-equilibrium dynamics of photoexcited spin-state concentration waves

Journal

FARADAY DISCUSSIONS
Volume 177, Issue -, Pages 363-379

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4fd00164h

Keywords

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Funding

  1. CNRS
  2. Region Bretagne
  3. Institut Universitaire de France, Rennes Metropole
  4. ANR [ANR-13-BS04-0002]
  5. European Regional Development Fund (FEDER)
  6. NIH [R24 GM111072]
  7. University of Chicago through France and Chicago Collaborating in the Sciences (FACCTS) program
  8. DOE Office of Science by Argonne National Laboratory [DE-AC02-06CH11357]
  9. NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R24GM111072] Funding Source: NIH RePORTER

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The spin crossover compound [(FeH2L2-Me)-H-II][PF6](2) presents a two-step phase transition. In the intermediate phase, a spin state concentration wave (SSCW) appears resulting from a symmetry breaking (cell doubling) associated with a long-range order of alternating high and low spin molecular states. By combining time-resolved optical and X-ray diffraction measurements on a single crystal, we study how such a system responds to femtosecond laser excitation and we follow in real time the erasing and rewriting of the SSCW.

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