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

Beyerlein, K. R., Disa, A., Först, M., Henstridge, M., Gebert, T., Forrest, T., et al. (2020). Probing photoinduced rearrangements in the NdNiO3 magnetic spiral with polarization-sensitive ultrafast resonant soft x-ray scattering. Physical Review B, 102(1): 014311. doi:10.1103/PhysRevB.102.014311.

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2020
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ublished by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

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https://arxiv.org/abs/2004.06752 (Preprint)
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https://dx.doi.org/10.1103/PhysRevB.102.014311 (Publisher version)
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 Creators:
Beyerlein, K. R.1, 2, Author           
Disa, A.1, 2, 3, Author           
Först, M.1, 2, Author           
Henstridge, M.1, 2, Author           
Gebert, T.1, 2, Author           
Forrest, T.4, Author
Fitzpatrick, A.4, Author
Dominguez, C.5, Author
Fowlie, J.5, Author
Gibert, M.6, Author
Triscone, J.-M.5, Author
Dhesi, S. S.4, Author
Cavalleri, A.1, 2, 3, 7, Author           
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2Center for Free-Electron Laser Science, Hamburg, ou_persistent22              
3The Hamburg Centre for Ultrafast Imaging, Hamburg, ou_persistent22              
4Diamond Light Source, Harwell Science and Innovation Campus, ou_persistent22              
5Department of Quantum Matter Physics, University of Geneva, ou_persistent22              
6Departmentof Physics, University of Zurich, ou_persistent22              
7Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

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 Abstract: 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 insulator-metal 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.

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Language(s): eng - English
 Dates: 2020-06-182020-04-152020-06-192020-07-222020-07-01
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: arXiv: 2004.06752
DOI: 10.1103/PhysRevB.102.014311
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Project name : This work was supported by the European Research Council (ERC) Grant No. 319286 (Q-MAC) and the Swiss National Science Foundation through Division II. Additional funding was provided by Cluster of Excellence “CUI: Advanced Imaging of Matter” of the Deutsche Forschungsgemeinschaft (DFG), EXC 2056, Project ID 390715994. A.S.D. was supported by a fellowship from the Alexander von Humboldt Foundation. We thank Diamond Light Source for provision of beamtime under Proposal No. SI17605-2.
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Source 1

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 102 (1) Sequence Number: 014311 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008