De Haas-van Alphen Effect of UB_2, UB_4 and UGa_3 :

NDLデジタルコレクション
  • YAMAMOTO,Etsuji
    Advanced Science Research Center, Japan Atomic Energy Research Institute
  • HONMA,Tetsuo
    Advanced Science Research Center, Japan Atomic Energy Research Institute
  • HAGA,Yoshinori
    Advanced Science Research Center, Japan Atomic Energy Research Institute
  • AOKI,Dai
    Graduate School of Science, Osaka University
  • HEDO,Masato
    Graduate School of Science, Osaka University
  • INADA,Yoshihiko
    Graduate School of Science, Osaka University
  • SETTAI,Rikio
    Graduate School of Science, Osaka University
  • YAMAGAMI,Hiroshi
    Graduate School of Science, Tohoku University
  • ONUKI,Yoshichika
    Advanced Science Research Center, Japan Atomic Energy Research Institute:Graduate School of Science, Osaka University

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We grew single crystals of UB_2 and UB_4 by the Czochralski pulling method and of Uga_3 by the flux method and observed the de Haas-van Alphen (dHvA) oscillations. For UB_2, dHvA frequencies are well explained by the 5f-itinerant relativistic band theory. UB_2 is compensated metal and the Fermi surface consists of two closed but corrugated Fermi surfaces. The cyclotron masses are moderately heavy, ranging from 1.2 to 7.7m_0. For UB_4, we observed dHvA branches in a limited angle region. The cyclotron mass is in the range of 3.0 to 8.4m_0. We also found four dHvA branches in UGa_3, which correspond to ellipsoidal Fermi surfaces.

収録刊行物

  • JJAP series

    JJAP series 11 209-211, 1999-02-08

    Japanese Journal of Applied Physics

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