Breakdown of the Kondo Effect in Critical Antiferromagnets
arXiv:cond-mat/9912102 · doi:10.1103/PhysRevB.61.5854
Abstract
The breakdown of the Kondo effect may be the origin of the anomalous properties of the heavy-fermion compounds at low temperatures. We study the dynamics of one impurity embedded in an antiferromagnetic host at the quantum critical point and show that the impurity is not screened and develops a power law correlation function. This suggests that the breakdown of the Kondo effect can simply be a consequence of the system's proximity to the quantum critical point.
To appear in Physical Review B (Brief Reports)