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ID 48816
FullText URL
Author
Nakamura, Yoshiaki
Okazaki, Hiroyuki
Yoshida, Rikiya
Wakita, Takanori
Takeya, Hiroyuki
Hirata, Kazuto
Hirai, Masaaki
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 Sience KeyUT