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  Fermi surface studies of the skutterudite superconductors LaPt4Ge12 and PrPt4Ge12

Bergk, B., Klotz, J., Förster, T., Gumeniuk, R., Leithe-Jasper, A., Lorenz, V., et al. (2019). Fermi surface studies of the skutterudite superconductors LaPt4Ge12 and PrPt4Ge12. Physical Review B, 99(24): 245115, pp. 1-6. doi:10.1103/PhysRevB.99.245115.

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Bergk, B.1, Autor
Klotz, J.1, Autor
Förster, T.1, Autor
Gumeniuk, R.2, Autor           
Leithe-Jasper, A.3, Autor           
Lorenz, V.4, Autor           
Schnelle, W.5, Autor           
Nicklas, M.6, Autor           
Rosner, H.4, Autor           
Grin, Y.7, Autor           
Wosnitza, J.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Roman Gumeniuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863421              
3Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
4Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
5Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
6Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863472              
7Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Zusammenfassung: We report on comprehensive de Haas-van Alphen (dHvA) and electronic band-structure studies of the superconducting skutterudites LaPt4Ge12 (T-c= 8.3 K) and PrPt4Ge12(T-c = 7.9 K). Both materials show very rich spectra of dHvA oscillations with similar and only slightly varying angular-dependent frequencies. The spectral richness can partly be rationalized by the elaborated electronic band structures resulting in several Fermi surfaces built by six different bands. The effective cyclotron masses of both superconductors lie between about 0.5 and 1.1 times the free-electron mass. Although these values are small, we find moderate mass enhancements between about 2 and 4 when comparing to the calculated masses. Our results evidence the localized character of the 4f electrons in the Pr compound and are in line with an electron-phonon mediated multiband superconductivity, largely identical for both compounds.

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Sprache(n): eng - English
 Datum: 2019-06-102019-06-10
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1103/PhysRevB.99.245115
 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: 99 (24) Artikelnummer: 245115 Start- / Endseite: 1 - 6 Identifikator: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008