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Updated: Feb 22, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions
M H Seaberg1, B Holladay2, J C T Lee3,4
1Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA.
Abstract:
We report an x-ray photon correlation spectroscopy method that exploits the recent development of the two-pulse mode at the Linac Coherent Light Source. By using coherent resonant x-ray magnetic scattering, we studied spontaneous fluctuations on nanosecond time scales in thin films of multilayered Fe/Gd that exhibit ordered stripe and Skyrmion lattice phases. The correlation time of the fluctuations was found to differ between the Skyrmion phase and near the stripe-Skyrmion boundary. This technique will enable a significant new area of research on the study of equilibrium fluctuations in condensed matter.
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