Magnetic phase transition of CeSb studied by low-energy angle-resolved photoemission spectroscopy

Akari Takayama, Seigo Souma, Takafumi Sato, Toshiyuki Arakane, Takashi Takahashi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We have performed low-energy ultrahigh-resolution angle-resolved photoemission spectroscopy on CeSb to elucidate the bulk electronic structure responsible for the magnetic phase transition. By using a newly developed xenon-plasma discharge lamp, we clearly observed the splitting of Sb 5p3/2 and Ce 5d bands near the Fermi level as well as their strong hybridization below the Néel temperature (T n = 16 K). We also revealed distinct differences in the band structure between the antiferropara- and antiferro-magnetic phases. These experimental results are discussed in terms of the p-f/p-d mixing effect, the exchange splitting, and the magnetic band-folding. The present result also explains the emergence of fine structures in the optical conductivity in the magnetic phase.

Original languageEnglish
Article number073702
Journaljournal of the physical society of japan
Volume78
Issue number7
DOIs
Publication statusPublished - 2009 Jul

Keywords

  • ARPES
  • Ce compounds
  • Electronic structure
  • P-f mixing

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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