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

DOI: 10.1103/PhysRevB.102.014311 DOI Help

Authors: K. R. Beyerlein (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science) , A. Disa (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science; The Hamburg Centre for Ultrafast Imaging) , M. Först (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science) , M. Henstridge (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science) , T. Gebert (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science) , T. Forrest (Diamond Light Source) , A. Fitzpatrick (Diamond Light Source) , C. Dominguez (University of Geneva) , J. Fowlie (University of Geneva) , M. Gibert (University of Zurich) , J.-M. Triscone (University of Geneva) , S. S. Dhesi (Diamond Light Source) , A. Cavalleri (Max Planck Institute for the Structure and Dynamics of Matter; Center for Free-Electron Laser Science; The Hamburg Centre for Ultrafast Imaging; University of Oxford)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review B , VOL 102

State: Published (Approved)
Published: July 2020
Diamond Proposal Number(s): 17605

Open Access Open Access

Abstract: We use resonant soft x-ray diffraction to track the photoinduced dynamics of the antiferromagnetic structure in a NdNi O 3 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 L 3 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.

Journal Keywords: Antiferromagnetism; Magnetic order; Magnetization dynamics; Thin films; X-ray resonant magnetic scattering

Diamond Keywords: Antiferromagnetism

Subject Areas: Materials, Physics


Instruments: I06-Nanoscience

Added On: 04/10/2021 13:38

Documents:
PhysRevB.102.014311.pdf

Discipline Tags:

Materials Science Quantum Materials Physics Hard condensed matter - structures Magnetism Surfaces interfaces and thin films

Technical Tags:

Scattering Resonant Soft X-ray Scattering (RSXS)