Journal Article

PUBDB-2023-04090

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ultrafast demagnetization in bulk nickel induced by X-ray photons tuned to Ni $M_3$ and $L_3$ absorption edges

Kapcia, K. (Corresponding author)Extern* ; Tkachenko, V. (Corresponding author)XFEL.EU*DESY* ; Capotondi, F.Extern* ; Lichtenstein, A.XFEL.EU* ; Molodtsov, S.XFEL.EU* ; Piekarz, P. ; Ziaja, B. (Corresponding author)CFEL*XFEL.EU*DESY*

2024
Macmillan Publishers Limited, part of Springer Nature [London]

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Please use a persistent id in citations: doi:10.1038/s41598-023-50467-9  doi:10.3204/PUBDB-2023-04090

Report No.: arXiv:2307.04671

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 $M_3$ and $L_3$ 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.

Note: 6 pages, 5 figures (10 panels), 1 table, 30 references; pdfRevTeX class; double-column formatting

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Contributing Institute(s):

1. Gruppe CFEL-XM (FS-CFEL-XM)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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