Phase diagram of the Kondo necklace: a mean-field renormalization group approach

@article{Rappoport2001PhaseDO,
  title={Phase diagram of the Kondo necklace: a mean-field renormalization group approach},
  author={Tatiana G. Rappoport and Mucio A. Continentino},
  journal={Journal of Physics A},
  year={2001},
  volume={34},
  pages={10829-10837}
}
In this paper we investigate the magnetic properties of heavy fermions in the antiferromagnetic and dense Kondo phases in the framework of the Kondo necklace model. We use a mean-field renormalization group approach to obtain a temperature versus Kondo coupling (T–J) phase diagram for this model in qualitative agreement with Doniach's diagram, proposed on physical grounds. We further analyse the magnetically disordered phase using a two-site approach. We calculate the correlation functions and… 
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