Protracted screening in the periodic Anderson model

Article

关键词: FALICOV-KIMBALL MODEL;    QUANTUM MONTE-CARLO;    INFINITE DIMENSIONS;    HUBBARD-MODEL;    KONDO LATTICE;    FERMIONS;    THERMODYNAMICS;    PHOTOEMISSION;    TEMPERATURE;    SCALE;   

DOI  :  10.1103/PhysRevB.55.R3332

来源: SCIE

【 摘 要 】

The asymmetric infinite-dimensional periodic Anderson model is examined with a quantum Monte Carlo simulation. For small conduction band filling, we find a severe reduction in the Kondo scale, compared to the impurity value, as well as protracted spin screening consistent with some recent controversial photoemission experiments. The Kondo screening drives a ferromagnetic transition when the conduction band is quarter filled and both the Ruderman-Kittel-Kasuya-Yosida (RKKY) and superexchange favor antiferromagnetism. We also find RKKY-driven ferromagnetic and antiferromagnetic transitions.

【 授权许可】

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