ヤマガミ ヒロシ   YAMAGAMI HIROSHI
  山上 浩志
   所属   京都産業大学  理学部 物理科学科
   職種   教授
言語種別 英語
発行・発表の年月 2009/10
形態種別 研究論文
査読 査読あり
標題 Bulk 5f electronic states of the uranium monochalcogenide US as seen via soft x-ray photoemission
執筆形態 その他
掲載誌名 PHYSICAL REVIEW B
出版社・発行元 AMER PHYSICAL SOC
巻・号・頁 80(16)
担当区分 責任著者
著者・共著者 Y. Takeda,T. Okane,T. Ohkochi,Y. Saitoh,H. Yamagami,A. Fujimori,A. Ochiai
概要 We have investigated the electronic states of the uranium monochalcogenide US, which is a typical ferromagnetic uranium compound, using soft x-ray photoemission spectroscopy (SX-PES). In early ultraviolet photoemission spectroscopy studies, two peak structures of the U 5f states were observed and have been interpreted that one has an itinerant character around the Fermi level (E-F) and the other located below E-F has a character of localized U 5f electrons. In this study, the intrinsic bulk valence-band spectrum of US was first deduced by estimating the contribution of surface states to the valence-band spectrum using core-level photoemission spectra. We conclude that the electronic structure of US can be basically described by the itinerant nature of the U 5f electrons from comparison with theoretical valence-band spectra obtained by band-structure calculation in the local-density approximation.
DOI 10.1103/PhysRevB.80.161101
ISSN 1098-0121