論文

査読有り
2008年1月

Electronic structure of CeRu(2)X(2) (X=Si,Ge) in the paramagnetic phase studied by soft x-ray ARPES and hard x-ray photoelectron spectroscopy

PHYSICAL REVIEW B
  • M. Yano
  • A. Sekiyama
  • H. Fujiwara
  • Y. Amano
  • S. Imada
  • T. Muro
  • M. Yabashi
  • K. Tamasaku
  • A. Higashiya
  • T. Ishikawa
  • Y. Onuki
  • S. Suga
  • 全て表示

77
3
開始ページ
35118
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevB.77.035118
出版者・発行元
AMER PHYSICAL SOC

Soft and hard x-ray photoelectron spectroscopy has been performed for one of the heavy fermion system CeRu(2)Si(2) and a 4f-localized ferromagnet CeRu(2)Ge(2) in the paramagnetic phase. The three-dimensional band structures and Fermi surface shapes of CeRu(2)Si(2) have been determined by soft x-ray h nu-dependent angle-resolved photoelectron spectroscopy. The differences in the Fermi surface topology and the non-4f electronic structures between CeRu(2)Si(2) and CeRu(2)Ge(2) are qualitatively explained by the band-structure calculation for both 4f itinerant and localized models, respectively. The Ce valences in CeRu(2)X(2) (X=Si,Ge) at 20 K are quantitatively estimated by the single impurity Anderson model calculation, where the Ce 3d hard x-ray core-level PES and Ce 3d x-ray absorption spectra have shown stronger hybridization and signature for the partial 4f contribution to the conduction electrons in CeRu(2)Si(2).

リンク情報
DOI
https://doi.org/10.1103/PhysRevB.77.035118
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000252862900051&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevB.77.035118
  • ISSN : 1098-0121
  • Web of Science ID : WOS:000252862900051

エクスポート
BibTeX RIS