Femtosecond single-shot imaging of nanoscale ferromagnetic order in co/pd multilayers using resonant x-ray holography

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Abstract

We present the first single-shot images of ferromagnetic, nanoscale spin order taken with femtosecond x-ray pulses. X-ray-induced electron and spin dynamics can be outrun with pulses shorter than 80 fs in the investigated fluence regime, and no permanent aftereffects in the samples are observed below a fluence of 25mJ/cm2. Employing resonant spatially muliplexed x-ray holography results in a low imaging threshold of 5mJ/cm2. Our results open new ways to combine ultrafast laser spectroscopy with sequential snapshot imaging on a single sample, generating a movie of excited state dynamics. © 2012 American Physical Society.

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Wang, T., Zhu, D., Wu, B., Graves, C., Schaffert, S., Rander, T., … Scherz, A. O. (2012). Femtosecond single-shot imaging of nanoscale ferromagnetic order in co/pd multilayers using resonant x-ray holography. Physical Review Letters, 108(26). https://doi.org/10.1103/PhysRevLett.108.267403

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