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ID 48820
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Author
Nakamura, Yoshiaki
Okazaki, Hiroyuki
Yoshida, Rikiya
Wakita, Takanori
Hirai, Masaaki
Muraoka, Yuji Kakenhi
Takeya, Hiroyuki
Hirata, Kazuto
Kumigashira, Hiroshi
Oshima, Masaharu
Yokoya, Takayoshi ORCID Kakenhi
Abstract
We have performed soft x-ray photoemission spectroscopy (SXPES) and resonant photoemission spectroscopy (RPES) of the filled skutterudite superconductor PrPt4Ge12 in order to study the electronic structure of valence band and the character of Pr 4f. SXPES of PrPt4Ge12 measured with 1200 eV photon energy, where spectral contribution of Pr 4f is negligible, was found nearly identical with that of LaPt4Ge12, indicating similarity of Pt–Ge derived electronic states of the two compounds. Good correspondence with band calculations allows us to ascribe the dominant Ge 4p character of the density of states at the Fermi level (EF). Pr 3d → 4f RPES shows that, although Pr 4f electrons in PrPt4Ge12 are not as strongly hybridized with conduction electrons near EF as in PrFe4P12, there are finite Pr 4f contribution to the states near EF in PrPt4Ge12. These PES results give the information of fundamental electronic structure for understanding the physical properties of the novel filled skutterudite superconductor PrPt4Ge12.
Keywords
PrPt<sub>4</sub>Ge<sub>12</sub>
filled skutterudite
superconductor
soft x-ray photoemission spectroscopy
Pr 3d → 4f resonant photoemission
electronic structure
Published Date
2010-11-25
Publication Title
Journal of the Physical Society of Japan
Volume
volume79
Issue
issue12
Publisher
The Physical Society of Japan
Start Page
124701-1
End Page
124701-4
ISSN
0031-9015
Content Type
Journal Article
Project
Research Center of New Functional Materials for Energy Production, Storage, and Transport
Official Url
http://jpsj.ipap.jp/link?JPSJ/79/124701/
language
英語
Copyright Holders
©2010 The Physical Society of Japan
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Refereed
True
DOI
Web of Sience KeyUT