Dual Character of 5f Electrons in UPd2Al3 Observed by High-Resolution Photoemission Spectroscopy

Takashi Takahashi, Noriaki Sato, Takayoshi Yokoya, Ashish Chainani, Takayuki Morimoto, Takemi Komatsubara

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Comparative high-resolution temperature-dependent photoemission measurements were performed for UPd2Al3 and UPd3. The photoemission spectrum near EF of UPd2Al3 consists of a sharp peak at EF and a broad band at 0.5-1.0 eV binding energy, both features having U 5f character. The sharp feature at EF shows good agreement with a recent band structure calculation, while the broad band matches well with the U 5f-derived localized feature in UPd3, indicating the dual character of 5f electrons in UPd2Al3. The intensity of the broad band relative to the EF-peak increases with increasing temperature, suggesting that the localized character of 5f electrons in UPd2Al3 increases at higher temperatures. These observations are consistent with the transport and magnetic measurements which imply a temperature-dependent dual (itinerant and localized) character of U 5f electrons in UPd2Al3.

Original languageEnglish
Pages (from-to)156-159
Number of pages4
Journaljournal of the physical society of japan
Volume65
Issue number1
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

Keywords

  • 5f electrons
  • Electronic structure
  • Photoemission spectroscopy
  • UPdAl

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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