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  Fermi surface investigation of the filled skutterudite LaRu4As12

Klotz, J., Götze, K., Lorenz, V., Prots, Y., Rosner, H., Harima, H., et al. (2019). Fermi surface investigation of the filled skutterudite LaRu4As12. Physical Review B, 100(20): 205106, pp. 1-8. doi:10.1103/PhysRevB.100.205106.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-4D78-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-4EEF-8
Genre: Journal Article

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 Creators:
Klotz, J.1, Author
Götze, K.1, Author
Lorenz, V.2, Author              
Prots, Yu.3, Author              
Rosner, H.2, Author              
Harima, H.1, Author
Bochenek, L.1, Author
Cichorek, T.1, Author
Sheikin, I1, Author
Wosnitza, J.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
3Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              

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 Abstract: Of all stoichiometric filled-skutterudite superconductors, LaRu4As12 has the highest critical field and temperature. Here we report on a detailed Fermi-surface investigation of LaRu4As12 by means of de Haas-van Alphen measurements and density-functional-theory calculations. We find evidence for a nearly spherical and a multiply connected Fermi-surface sheet. The different effective masses and mass enhancements for the two sheets support two-band superconductivity, which was inferred from previous specific-heat measurements. Furthermore, quantum oscillations persist as well in the superconducting phase. We use two models to describe the additional damping, yielding energy gaps differing by a factor of 5.

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Language(s): eng - English
 Dates: 2019-11-052019-11-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 100 (20) Sequence Number: 205106 Start / End Page: 1 - 8 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008