Band structures of CeRu2(Si1-xGex)2 studied by resonant soft X-ray ARPES

Tetsuo Okane, Takuo Ohkochi, Yukiharu Takeda, Shin ichi Fujimori, Akira Yasui, Yuji Saitoh, Hiroshi Yamagami, Atsushi Fujimori, Yuji Matsumoto, Motoki Sugi, Noriaki Kimura, Takemi Komatsubara, Haruyoshi Aoki

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Angle-resolved photoelectron spectroscopy (ARPES) measurements were made in the Ce 3d → 4f resonance energy region for the paramagnetic state of CeRu2Si2, CeRu2(Si0.82Ge0.18)2, and LaRu2Si2 to investigate a variation of band structures around the quantum critical point (QCP). The observed band structures are very similar between CeRu2Si2 and CeRu2(Si0.82Ge0.18)2. The results indicate that the Ce 4f electrons in the paramagnetic state have an itinerant character and participate in the formation of energy bands both in CeRu2Si2 and CeRu2(Si0.82Ge0.18)2, and the change of the band structures in the paramagnetic states should be continuous around the QCP of the CeRu2(Si1-xGex)2 system.

Original languageEnglish
Pages (from-to)697-699
Number of pages3
JournalPhysica Status Solidi (B) Basic Research
Issue number3
Publication statusPublished - 2010 Mar

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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