Ultrafast demagnetization in bulk nickel induced by X-ray photons tuned to Ni M 3 and L 3 absorption edges

Abstract Studies of light-induced demagnetization started with the experiment performed by Beaupaire et al. on Ni. Here, we present theoretical predictions for X-ray induced demagnetization of nickel, with X-ray photon energies tuned to its $$M_3$$ M 3 and $$L_3$$ L 3 absorption edges. We show that...

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Published inScientific reports Vol. 14; no. 1; pp. 1 - 8
Main Authors Konrad J. Kapcia, Victor Tkachenko, Flavio Capotondi, Alexander Lichtenstein, Serguei Molodtsov, Przemysław Piekarz, Beata Ziaja
Format Journal Article
LanguageEnglish
Published Nature Portfolio 01.12.2024
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Summary:Abstract Studies of light-induced demagnetization started with the experiment performed by Beaupaire et al. on Ni. Here, we present theoretical predictions for X-ray induced demagnetization of nickel, with X-ray photon energies tuned to its $$M_3$$ M 3 and $$L_3$$ L 3 absorption edges. We show that the specific feature in the density of states in the d-band of Ni, i.e., a sharp peak located just above the Fermi level, strongly influences the change of the predicted magnetic signal, making it stronger than in the previously studied case of X-ray demagnetized cobalt. It impacts also the value of Curie temperature for Ni. We believe that this finding will inspire dedicated experiments investigating magnetic processes in X-ray irradiated nickel and cobalt.
ISSN:2045-2322
DOI:10.1038/s41598-023-50467-9