Numerical Renormalization Group Study on the Non-Fermi-Liquid Behavior of Impurity Anderson Model with Non-Kramers Doublet State :

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  • SAKAI,Osamu
    Department of Physics, Graduate School of Science, Tohoku University
  • SHIMIZU,Yukihiro
    Department of Applied Physics, Graduate School of Science, Tohoku University
  • SUZUKI,Shunya
    Department of Physics, Graduate School of Science, Tohoku University

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Abstract

We review our recent studies on the non-Fermi-liquid (NFL) behavior of an impurity Anderson model (IAM) which has f^2 configuration and the non-Kramers doublet ground state of the crystalline electric field (CEF) in the atomic limit. The IAM shows successively the NFL, CEF-singlet and the Kondo-singlet like ground states when the hybridization strength increases. The magnetic susceptibility, and the specific heat under the magnetic field are calculated. The magneto resistance at T = 0 is also calculated for the NFL state. Its sign changes from negative to positive when the hybridization strength increases.

Journal

  • JJAP series

    JJAP series 11 148-150, 1999-02-08

    Japanese Journal of Applied Physics

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