Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

The interplay of local electron correlations and ultrafast spin dynamics in fcc Ni


Fangohr,  H.
European XFEL;
Computational Science, Scientific Service Units, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
University of Southampton;

External Resource
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Supplementary Material (public)

(Supplementary material), 321KB


Lojewski, T., Elhanoty, M. F., Guyader, L. L., Grånäs, O., Agarwal, N., Boeglin, C., et al. (2023). The interplay of local electron correlations and ultrafast spin dynamics in fcc Ni. Materials Research Letters, 11(8), 655-661. doi:10.1080/21663831.2023.2210606.

Cite as: https://hdl.handle.net/21.11116/0000-000B-51D7-7
The complex electronic structure of metallic ferromagnets is determined by a balance between exchange interaction, electron hopping leading to band formation, and local Coulomb repulsion. By combining high energy and temporal resolution in femtosecond time-resolved X-ray absorption spectroscopy with ab initio time-dependent density functional theory we analyze the electronic structure in fcc Ni on the time scale of these interactions in a pump-probe experiment. We distinguish transient broadening and energy shifts in the absorption spectra, which we demonstrate to be captured by electron repopulation respectively correlation-induced modifications of the electronic structure, requiring to take the local Coulomb interaction into account.
We demonstrate that local correlations are essential for the transient electronic structure of optically excited Ni; paving the way for analyzing these interactions on their intrinsic timescales in correlated materials.