|
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 |
|
| 発行・発表の年月 | 1999/07 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Fermi surface properties and de Haas–van Alphen oscillation in both the normal and superconducting mixed states of URu2Si2 |
| 執筆形態 | その他 |
| 掲載誌名 | Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties |
| 巻・号・頁 | 79(7),1045-1077頁 |
| 著者・共著者 | H. Ohkuni,Y. Inada,Y. Tokiwa,K. Sakurai,R. Settai,T. Honma,Y. Haga,E. Yamamoto,Y. Ōnuki,H. Yamagami,S. Takahashi,T. Yanagisawa |
| 概要 | We have succeeded in growing a high-quality single crystal of URu2Si2 with a residual resistivity ratio of 255 and performed magnetoresistance and de Haas–van Alphen (dHvA) experiments. The dHvA oscillations were observed clearly in both the normal and superconducting mixed states. From the magnetoresistance experiments, it is concluded that URu2Si2 is a compensated metal with equal carrier numbers of electrons and holes. In the dHvA experiments we observed three kinds of Fermi surfaces. We studied precisely the Fermi surface properties in both the normal and mixed states. The dHvA frequency does not change in magnitude between the normal and mixed states, while the cyclotron effective mass is reduced, and the corresponding Dingle temperature or scattering rate of the conduction electron increases in the mixed state. © 1999 Taylor and Francis Group, LLC. |
| DOI | 10.1080/13642819908214859 |
| ISSN | 1364-2812 |