摘要: We discuss the phase diagram of Kondo lattice: we generalize to lattice a method proposed by Yoshimori and Sakurai for single-impurity problem; this transforms exchange interaction into fictitious $s\ensuremath{-}f$ hybridization, gives resonance width ${T}_{K}$ at Fermi level. study compare its energy with magnetic phase. The state is stable when larger than critical value; insulating conduction band half filled.
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