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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 | 2009/05 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Two-Dimensional Fermi Surfaces in LaRuPO and LaFePO versus Three-Dimensional Fermi Surfaces in LaFe2P2 |
| 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 | 78(5) |
| 担当区分 | 責任著者 |
| 著者・共著者 | Hiroshi Muranaka,Yusuke Doi,Keisuke Katayama,Hitoshi Sugawara,Rikio Settai,Fuminori Honda,Tatsuma D. Matsuda,Yoshinori Haga,Hiroshi Yamagami,Yoshichika Onuki |
| 概要 | We succeeded in observing the de Haas-van Alphen (dHvA) effect in LaRuPO, which is a sister compound of iron-based oxypnictide superconductors. All the detected dHvA frequencies, which correspond to the maximum or minimum cross-sectional areas of Fermi surfaces, approximately follow the 1/cos theta dependence, where theta is a field-tilted angle from the tetragonal [001] direction to the [100] and [110] directions. The Fermi surfaces are found to consist of two cylindrical hole Fermi surfaces and two cylindrical electron Fermi surfaces on the basis of the similar cylindrical Fermi surfaces in LaFePO and the result of energy band calculations. The cyclotron effective mass in LaRuPO is light, ranging from 0.55 to 0.86 m(0), which is compared with a large cyclotron mass in LaFePO. These two-dimensional Fermi surfaces in LaRuPO and LaFePO are also compared with the three-dimensional Fermi surfaces in LaFe2P2. |
| DOI | 10.1143/JPSJ.78.053705 |
| ISSN | 0031-9015 |