1
|
Kapcia KJ, Tkachenko V, Capotondi F, Lichtenstein A, Molodtsov S, Piekarz P, Ziaja B. Ultrafast demagnetization in bulk nickel induced by X-ray photons tuned to Ni M 3 and L 3 absorption edges. Sci Rep 2024; 14:473. [PMID: 38172505 PMCID: PMC10764823 DOI: 10.1038/s41598-023-50467-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/20/2023] [Indexed: 01/05/2024] Open
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 [Formula: see text] and [Formula: see text] 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.
Collapse
Affiliation(s)
- Konrad J Kapcia
- Institute of Spintronics and Quantum Information, Faculty of Physics, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 2, 61614, Poznań, Poland.
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
| | - Victor Tkachenko
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany.
| | - Flavio Capotondi
- Elettra-Sincrotrone Trieste S.C.p.A, 34149, Trieste, Basovizza, Italy
| | - Alexander Lichtenstein
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
- Institute of Theoretical Physics, University of Hamburg, Notkestr. 9-11, 22607, Hamburg, Germany
| | - Serguei Molodtsov
- European XFEL GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
- Institute of Experimental Physics, TU Bergakademie Freiberg, Leipziger Strasse 23, 09599, Freiberg, Germany
- Center for Efficient High Temperature Processes and Materials Conversion (ZeHS), TU Bergakademie Freiberg, Winklerstrasse 5, 09599, Freiberg, Germany
| | - Przemysław Piekarz
- Institute of Nuclear Physics, Polish Academy of Sciences, W.E. Radzikowskiego 152, 31-342, Kraków, Poland
| | - Beata Ziaja
- Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607, Hamburg, Germany.
- Institute of Nuclear Physics, Polish Academy of Sciences, W.E. Radzikowskiego 152, 31-342, Kraków, Poland.
| |
Collapse
|