This title appears in the Scientific Report :
2019
Please use the identifier:
http://hdl.handle.net/2128/21527 in citations.
Please use the identifier: http://dx.doi.org/10.1038/s41467-019-08445-1 in citations.
Kink far below the Fermi level reveals new electron-magnon scattering channel in Fe
Kink far below the Fermi level reveals new electron-magnon scattering channel in Fe
Many properties of real materials can be modeled using ab initio methods within a single-particle picture. However, for an accurate theoretical treatment of excited states, it is necessary to describe electron-electron correlations including interactions with bosons: phonons, plasmons, or magnons. I...
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Personal Name(s): | Młyńczak, E. (Corresponding author) |
---|---|
Müller, M. C. T. D. / Gospodarič, P. / Heider, T. / Aguilera, I. / Bihlmayer, G. / Gehlmann, M. / Jugovac, M. / Zamborlini, G. / Tusche, C. / Suga, S. / Feyer, V. / Plucinski, L. / Friedrich, Christoph / Blügel, S. / Schneider, C. M. | |
Contributing Institute: |
Quanten-Theorie der Materialien; IAS-1 Photovoltaik; IEK-5 Elektronische Eigenschaften; PGI-6 JARA - HPC; JARA-HPC JARA-FIT; JARA-FIT Quanten-Theorie der Materialien; PGI-1 |
Published in: | Nature Communications, 10 (2019) 1, S. 505 |
Imprint: |
[London]
Nature Publishing Group UK
2019
|
DOI: |
10.1038/s41467-019-08445-1 |
PubMed ID: |
30705281 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena Controlling Spin-Based Phenomena |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1038/s41467-019-08445-1 in citations.
Many properties of real materials can be modeled using ab initio methods within a single-particle picture. However, for an accurate theoretical treatment of excited states, it is necessary to describe electron-electron correlations including interactions with bosons: phonons, plasmons, or magnons. In this work, by comparing spin- and momentum-resolved photoemission spectroscopy measurements to many-body calculations carried out with a newly developed first-principles method, we show that a kink in the electronic band dispersion of a ferromagnetic material can occur at much deeper binding energies than expected (Eb = 1.5 eV). We demonstrate that the observed spectral signature reflects the formation of a many-body state that includes a photohole bound to a coherent superposition of renormalized spin-flip excitations. The existence of such a many-body state sheds new light on the physics of the electron-magnon interaction which is essential in fields such as spintronics and Fe-based superconductivity. |