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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 | 2003/03 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Quasi-two dimensional electronic state of the antiferromagnet UPtGa5 |
| 執筆形態 | その他 |
| 掲載誌名 | JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN |
| 出版社・発行元 | PHYSICAL SOC JAPAN |
| 巻・号・頁 | 72(3),pp.576-581 |
| 著者・共著者 | S Ikeda,Y Tokiwa,Y Haga,E Yamamoto,T Okubo,M Yamada,N Nakamura,K Sugiyama,K Kindo,Y Inada,H Yamagami,Y Onuki |
| 概要 | We have carried out the de Haas-van Alphen (dHvA) experiment to clarify the Fermi surface property of an antiferromagnet UPtGa5. and have constructed the magnetic phase diagram from the high-field magnetization measurement. From the dHvA experiment. the Fermi surface is found to consist of four kinds of nearly cylindrical Fermi surfaces along the tetragonal 1001] direction. which are approximately explained by the result of the spin-polarized energy band calculations based on the antiferromagnetic structure with a sequence of (up arrowdown arrow) along [001]. Relatively large cyclotron masses are detected for carriers of the corresponding Fermi surfaces, ranging from 10 to 24 m(o) (m(o): rest mass of an electron). 5f electrons are thus concluded to be itinerant and also to contribute to the magnetic moment at the uranium sites. |
| DOI | 10.1143/JPSJ.72.576 |
| ISSN | 0031-9015 |