Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe 2

Tetsuo Okane, Jun Okamoto, Kazutoshi Mamiya, Shin Ichi Fujimori, Yukiharu Takeda, Yuji Saitoh, Yasuji Muramatsu, Atsushi Fujimori, Yoshinori Haga, Etsuji Yamamoto, Arata Tanaka, Tetsuo Honma, Yoshihiko Inada, Yoshichika Onuki

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9 Citations (Scopus)

Abstract

X-ray absorption magnetic circular dichroism (XMCD) at the U N 4,5 edges was measured for the ferromagnetic superconductor UGe 2 in the normal state. The orbital and spin magneic moments deduced from the sum rule analysis of the XMCD data indicate that the U atom in UGe 2 is considered to be closer to the trivalent state rather than the tetravalent state. The temperature dependence of the XMCD signal does not show any significant anomaly at T* ∼ 30 K, where the resistivity anomaly was observed at ambient pressure. The XMCD measurement at the U N 2,3 edge indicates that the U 6d electrons have negligibly small magnetic contributions.

Original languageEnglish
Article number024704
Journaljournal of the physical society of japan
Volume75
Issue number2
DOIs
Publication statusPublished - Feb 1 2006

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Okane, T., Okamoto, J., Mamiya, K., Fujimori, S. I., Takeda, Y., Saitoh, Y., Muramatsu, Y., Fujimori, A., Haga, Y., Yamamoto, E., Tanaka, A., Honma, T., Inada, Y., & Onuki, Y. (2006). Soft X-ray absorption magnetic circular dichroism study of ferromagnetic superconductor UGe 2 journal of the physical society of japan, 75(2), [024704]. https://doi.org/10.1143/JPSJ.75.024704