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ID 48816
FullText URL
Author
Nakamura, Yoshiaki
Okazaki, Hiroyuki
Yoshida, Rikiya
Wakita, Takanori
Takeya, Hiroyuki
Hirata, Kazuto
Hirai, Masaaki
Muraoka, Yuji Kaken ID researchmap
Yokoya, Takayoshi ORCID Kaken ID researchmap
Abstract
We performed a comparative study of the superconducting gap in the new filled skutterudite superconductors LaPt4Ge12 and PrPt4Ge12 using high-resolution photoemission spectroscopy. We succeeded in observing spectral changes across Tc that reflect the opening of the superconducting gap in both compounds and also in observing a noticeable difference in their respective superconducting spectral shapes near the Fermi level, pointing toward a more complex superconducting gap structure in PrPt4Ge12. In addition, we found that the two-gap model is more suitable for describing the superconducting-state spectrum of PrPt4Ge12 than the single-isotropic-gap and single-anisotropic-gap models, which suggests an explanation that multiband effects may possibly induce the anomalous superconducting properties of PrPt4Ge12.
Published Date
2012-07-26
Publication Title
Physical Review B
Volume
volume86
Issue
issue1
Publisher
The American Physical Society
Start Page
014521-1
End Page
014521-5
ISSN
1098-0121
Content Type
Journal Article
Project
Research Center of New Functional Materials for Energy Production, Storage, and Transport
Official Url
http://link.aps.org/doi/10.1103/PhysRevB.86.014521
language
英語
Copyright Holders
© 2012 The American Physical Society
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publisher
Refereed
True
DOI
Web of Science KeyUT