Numerical Study of Magnetism in the Periodic Anderson Model

ORAL

Abstract

The periodic Anderson model is believed as a candidate of the minimal lattice models for itinerant ferromagnetism. Several numerical methods, including exactly diagonalization, constrained-path Monte Carlo method and mean field method, are employed to investigate the magnetic properties of the model in one dimension and two dimensions. By changing the band-filling, chemical potential of the impurity band and the hybridyzation between conduction band and impurity band, we found that in some parameter regions, different magnetic ordering exist. Some of results confirm the previous works and some are new.

*This work is partially supported by the Earmarked Grant for Research, HKSAR

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Authors

  • Yong-Qiang Wang

  • Hai-Qing Lin

    • Department of Physics, The Chinese University of Hong Kong, Hong Kong, China
    • Institute of Theoretical Physics and Physics Department, The Chinese University of Hong Kong, Hong Kong, China
    • Department of Physics, Chinese University of Hong Kong, Shatin, Hong Kong
    • Institute of Theoretical Physics and Department of Physics, The Chinese University of Hong Kong, Hong Kong SAR, China
    • Chinese University of Hong Kong
    • Department of Physics and Institute of Theoretical Physics, The Chinese University of Hong Kong, Hong Kong, China

  • James Gubernatis

    • Los Alamos National Laboratory, USA