Study of competition between the magnetic ordering and the Kondo effect in the heavy fermion systems by the self-energy functional method

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We have tried to construct the scheme by which we can investigate characteristic properties observed in magnetic-ion diluted heavy fermion systems modeled by the periodic Anderson model. The self-energy functional theory and the dynamical mean-field theory are numerical methods by which one can treat the local quantum many-body effect correctly. It has been shown that one can treat the randomness effect of magnetic-ion diluted systems and the electron correlation effect on the same footing by using the above scheme and the coherent potential approximation.