Soft X-ray magnetic circular dichroism study of uranium monochalcogenides at uranium N4,5 absorption edges

Tetsuo Okane, Yukiharu Takeda, Jun Okamoto, Kazutoshi Mamiya, Takuo Ohkochi, Shin Ichi Fujimori, Yuji Saitoh, Hiroshi Yamagami, Atsushi Fujimori, Akira Ochiai, Arata Tanaka

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13 Citations (Scopus)

Abstract

X-ray magnetic circular dichroism (XMCD) was measured for the ferromagnetic uranium monochalcogenides US and USe at U N4,5 absorption edges in the soft X-ray region. The obtained N4;5 XMCD signal of US was comparable to the M4,5 XMCD signal obtained in previous studies. From the sum-rule analysis of XMCD data, it was shown that the estimated ratios of orbital magnetic moment to spin magnetic moment |μLS| were almost the same for US and USe. The analysis of the XAS branching ratio indicated an increase in 5f electron occupation number from US to USe, which may suppress the increase in |μLS|.

Original languageEnglish
Article number024706
Journaljournal of the physical society of japan
Volume77
Issue number2
DOIs
Publication statusPublished - 2008 Feb

Keywords

  • Ferromagnetism
  • Magnetic circular dichroism
  • Uranium compounds
  • X-ray absorption

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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