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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 |
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| 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 |