Probing photoinduced rearrangements in the NdNiO3 magnetic spiral with polarization-sensitive ultrafast resonant soft x-ray scattering

We use resonant soft x-ray diffraction to track the photoinduced dynamics of the antiferromagnetic structure in a NdNiO3 thin film. Femtosecond laser pulses with a photon energy of 0.61 eV, resonant with electron transfer between long-bond and short-bond nickel sites, are used to excite the material and drive an ultrafast insulatormetal transition. Polarization-sensitive soft x-ray diffraction, resonant to the nickel L3 edge, then probes the evolution of the underlying magnetic spiral as a function of time delay with 80 ps time resolution. By modeling the azimuthal dependence of the scattered intensity for different linear x-ray polarizations, we benchmark the changes of the local magnetic moments and the spin alignment. The measured changes are consistent with a reduction of the long-bond site magnetic moments and an alignment of the spins towards a more collinear structure at early time delays.

    Organizational unit
    Triscone Group
    Creative Commons Attribution 4.0 International
Publication date11/12/2020
Retention date09/12/2030
accessLevelPublicAccess levelPublic
duaNoneContract on the use of data
  • Beyerlein, Kenneth R. orcid
  • Disa, Ankit orcid
  • Först, Michael
  • Henstridge, Meredith
  • Gebert, Thomas orcid
  • Forrest, Thomas
  • Fitzpatrick, Ann
  • Dominguez Ordonez, Claribel
  • Fowlie, Jennifer
  • Gibert, Marta
  • Triscone, Jean-Marc
  • Dhesi, Sarnjeet S
  • Cavalleri, Andrea
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