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  ARPES view on surface and bulk hybridization phenomena in the antiferromagnetic Kondo lattice CeRh2Si2

Patil, S., Generalov, A., Guttler, M., Kushwaha, P., Chikina, A., Kummer, K., et al. (2016). ARPES view on surface and bulk hybridization phenomena in the antiferromagnetic Kondo lattice CeRh2Si2. Nature Communications, 7: 11029, pp. 1-8. doi:10.1038/ncomms11029.

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Patil, S.1, Autor
Generalov, A.1, Autor
Guttler, M.1, Autor
Kushwaha, P.1, Autor
Chikina, A.1, Autor
Kummer, K.1, Autor
Rodel, T. C.1, Autor
Santander-Syro, A. F.1, Autor
Caroca-Canales, N.2, Autor           
Geibel, C.3, Autor           
Danzenbacher, S.1, Autor
Kucherenko, Yu.1, Autor
Laubschat, C.1, Autor
Allen, J. W.1, Autor
Vyalikh, D. V.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863465              

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 Zusammenfassung: The hybridization between localized 4f electrons and itinerant electrons in rare-earth-based materials gives rise to their exotic properties like valence fluctuations, Kondo behaviour, heavy-fermions, or unconventional superconductivity. Here we present an angle-resolved photoemission spectroscopy (ARPES) study of the Kondo lattice antiferromagnet CeRh2Si2, where the surface and bulk Ce-4f spectral responses were clearly resolved. The pronounced 4f[thinsp]0 peak seen for the Ce terminated surface gets strongly suppressed in the bulk Ce-4f spectra taken from a Si-terminated crystal due to much larger f-d hybridization. Most interestingly, the bulk Ce-4f spectra reveal a fine structure near the Fermi edge reflecting the crystal electric field splitting of the bulk magnetic 4f[thinsp]15/2 state. This structure presents a clear dispersion upon crossing valence states, providing direct evidence of f-d hybridization. Our findings give precise insight into f-d hybridization penomena and highlight their importance in the antiferromagnetic phases of Kondo lattices.

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Sprache(n): eng - English
 Datum: 2016-03-182016-03-18
 Publikationsstatus: Erschienen
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1038/ncomms11029
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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 7 Artikelnummer: 11029 Start- / Endseite: 1 - 8 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723