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  Propagating charge carrier plasmons in Sr2RuO4

Knupfer, M., Jerzembeck, F., Kikugawa, N., Roth, F., & Fink, J. (2022). Propagating charge carrier plasmons in Sr2RuO4. Physical Review B, 106(24): L241103, pp. 1-6. doi:10.1103/PhysRevB.106.L241103.

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 Urheber:
Knupfer, Martin1, Autor
Jerzembeck, Fabian2, Autor           
Kikugawa, Naoki1, Autor
Roth, Friedrich1, Autor
Fink, Jörg1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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Schlagwörter: Approximation algorithms, Charge carriers, Dispersion (waves), Electron energy loss spectroscopy, Electron scattering, Plasmons, Ruthenium compounds, Strontium compounds, Charge carrier plasmon, Inter-band transition, Long wavelength, Metal systems, Plasmon dispersion, Plasmon excitations, Quantum critical fluctuations, Random phase approximations, Tight binding, Transmission electron energy loss spectroscopies, Energy dissipation
 Zusammenfassung: We report on studies of charge carrier plasmon excitations in Sr2RuO4 by transmission electron energy-loss spectroscopy. In particular, we present results on the plasmon dispersion and its width as a function of momentum transfer. The dispersion can be qualitatively explained in the framework of random phase approximation calculations, using an unrenormalized tight-binding band structure. The constant long-wavelength width of the plasmon indicates that it is caused by a decay into interband transitions and not by quantum critical fluctuations. The results from these studies on a prototypical correlated metal system show that the long-wavelength plasmon excitations near 1 eV are caused by resilient quasiparticles and are not influenced by correlation effects. © 2022 American Physical Society.

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Sprache(n): eng - English
 Datum: 2022-12-122022-12-12
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1103/PhysRevB.106.L241103
 Art des Abschluß: -

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Titel: Physical Review B
  Kurztitel : Phys. Rev. B
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Woodbury, NY : American Physical Society
Seiten: - Band / Heft: 106 (24) Artikelnummer: L241103 Start- / Endseite: 1 - 6 Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008