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Protracted Screening in the Periodic Anderson Model

A. N. Tahvildar-Zadeh·M. Jarrell·J. K. Freericks
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Abstract

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 RKKY and superexchange favor antiferromagnetism. We also find RKKY-driven ferromagnetic and antiferromagnetic transitions.

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A. N. Tahvildar-Zadeh, M. Jarrell, J. K. Freericks. 1996-10-25. Protracted Screening in the Periodic Anderson Model. https://doi.org/10.1103/physrevb.55.r3332

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