ArticleNature communications2019
Femtosecond X-ray induced changes of the electronic and magnetic response of solids from electron redistribution.
Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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Who cites it
5 citing papers in PubMed.
- Simultaneous two-color absorption dynamics in the van der Waals ferromagnet FeStructural dynamics (Melville, N.Y.) · 2026Article
- Electron population dynamics in resonant non-linear x-ray absorption in nickel at a free-electron laser.Structural dynamics (Melville, N.Y.) · 2023Article
- A sensitive high repetition rate arrival time monitor for X-ray free electron lasers.Nature communications · 2023Article
- Photon-shot-noise-limited transient absorption soft X-ray spectroscopy at the European XFEL.Journal of synchrotron radiation · 2023Article
- Using the photoinducedStructural dynamics (Melville, N.Y.) · 2021Article
Corrections and comments
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Authors and funding
16 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Resonant X-ray absorption, where an X-ray photon excites a core electron into an unoccupied valence state, is an essential process in many standard X-ray spectroscopies. With increasing X-ray intensity, the X-ray absorption strength is expected to become nonlinear. Here, we report the onset of such a nonlinearity in the resonant X-ray absorption of magnetic Co/Pd multilayers near the Co L[Formula: see text] edge. The nonlinearity is directly observed through the change of the absorption spectrum, which is modified in less than 40 fs within 2 eV of its threshold. This is interpreted as a redistribution of valence electrons near the Fermi level. For our magnetic sample this also involves mixing of majority and minority spins, due to sample demagnetization. Our findings reveal that nonlinear X-ray responses of materials may already occur at relatively low intensities, where the macroscopic sample is not destroyed, providing insight into ultrafast charge and spin dynamics.
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Registered trials
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