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VIDEO DOI: https://doi.org/10.48448/hc5y-dh12

technical paper

MMM 2022

November 07, 2022

Minneapolis, United States

Investigation of Sub Nanosecond Fluctuations on Amorphous FeGe Near a Magnetic Phase Transition

Competition between the symmetric and antisymmetric exchange interactions can give rise to non-trivial magnetic spin textures that are both physically interesting and technologically promising. Here, I present results from a recent experiment conducted at LCLS that probed the magnetic fluctuations of an amorphous FeGe film. In this experiment, the magnetic phase transition between a helical and a paramagnetic state was investigated by means of X-ray photon fluctuation spectroscopy. By analyzing the statistical distribution of photon arrival events, sub-nanosecond timescales could be probed. This work provides both insight into the stabilization of magnetic spin textures as well as a template for future sub-nanosecond experiments that are now available due to X-ray Free Electron Lasers.

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