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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 | 2005/05/04 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Quasi-two-dimensional Fermi surfaces in the flat antiferromagnetic Brillouin zone of NpRhGa5 studied by dHvA experiments and energy band calculations |
| 執筆形態 | その他 |
| 掲載誌名 | Journal of Physics Condensed Matter |
| 巻・号・頁 | 17(17),pp.L169-L175 |
| 担当区分 | 責任著者 |
| 著者・共著者 | Dai Aoki,Hiroshi Yamagami,Yoshiya Homma,Yoshinobu Shiokawa,Etsuji Yamamoto,Akio Nakamura,Yoshinori Haga,Rikio Settai,Yoshichika Onuki |
| 概要 | We succeeded in growing a high-quality single crystal of NpRhGa5 by the Ga-flux method and observed the de Haas-van Alphen oscillation in the antiferromagnetic state. Four kinds of nearly cylindrical Fermi surfaces, which correspond to main Fermi surfaces, were clearly detected. These quasi-two-dimensional Fermi surfaces are formed in the flat antiferromagnetic Brillouin zone and are well explained on the basis of spin- and orbital-polarized LAPW energy band calculations. The cyclotron masses are moderately enhanced, ranging from 8.1 to 11.7 m0, which are approximately four times larger than the corresponding band masses. This is the first case where the 5f-itinerant band model is applicable to a neptunium magnetic compound. © 2005 IOP Publishing Ltd. |
| DOI | 10.1088/0953-8984/17/17/L03 |
| ISSN | 0953-8984 |