Protracted screening in the periodic Anderson model
- 1 February 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 55 (6) , R3332-R3335
- https://doi.org/10.1103/physrevb.55.r3332
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 Ruderman-Kittel-Kasuya-Yosida (RKKY) and superexchange favor antiferromagnetism. We also find RKKY-driven ferromagnetic and antiferromagnetic transitions.Keywords
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