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Low Energy Scales of Kondo Lattices: Mean-field Perspective

  • S. Burdin
Conference paper
Part of the NATO Science for Peace and Security Series B: Physics and Biophysics book series (NAPSB)

A review of the low temperature properties of Kondo lattice systems is presented within the mean-field approximation, focusing on the different characteristic energy scales. The Kondo temperature, T K , and the Fermi liquid coherence energy, T0, are analyzed as functions of the electronic filling, the shape of the non-interacting density of states, and the concentration of magnetic moments. These two scales can vanish, corresponding to a breakdown of the Kondo effect when an external magnetic field is applied. The Kondo breakdown can also be reached by adding a superexchange term to the Kondo lattice model, which mimics the intersite magnetic correlations neglected at the mean-field level.

Keywords

Fermi Liquid Kondo Effect Kondo Temperature Kondo Lattice Kondo Lattice Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science + Business Media B.V 2009

Authors and Affiliations

  • S. Burdin
    • 1
  1. 1.Institut fϼr Theoretische PhysikUniversität zu K϶lnK϶lnGermany

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