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ID 48816
フルテキストURL
著者
Nakamura, Yoshiaki The Graduate School of Natural Science and Technology, Okayama University
Okazaki, Hiroyuki The Graduate School of Natural Science and Technology, Okayama University
Yoshida, Rikiya The Graduate School of Natural Science and Technology, Okayama University
Wakita, Takanori The Graduate School of Natural Science and Technology, Okayama University
Takeya, Hiroyuki National Institute for Materials Science (NIMS)
Hirata, Kazuto National Institute for Materials Science (NIMS)
Hirai, Masaaki The Graduate School of Natural Science and Technology, Okayama University
Muraoka, Yuji The Graduate School of Natural Science and Technology, Okayama University
Yokoya, Takayoshi The Graduate School of Natural Science and Technology, Okayama University
抄録
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.
発行日
2012-07-26
出版物タイトル
Physical Review B
86巻
1号
出版者
The American Physical Society
開始ページ
014521-1
終了ページ
014521-5
ISSN
1098-0121
資料タイプ
学術雑誌論文
プロジェクト
エネルギー環境新素材拠点
オフィシャル URL
http://link.aps.org/doi/10.1103/PhysRevB.86.014521
言語
English
著作権者
© 2012 The American Physical Society
論文のバージョン
publisher
査読
有り
DOI
Web of Sience KeyUT