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