Correlated disorder in Kondo lattice

Abstract

Motivated by recent experiments on disordered heavy-fermion materials, we study the effect of correlated disorder in Kondo lattice. Correlations between the impurities are considered at the two-particle level. We use mean-field theory approximation for the Anderson lattice model to calculate how the emergence of coherence in the Kondo lattice is impacted by correlations between impurities. We show that the rate at which disorder suppresses coherence temperature depends on the length of impurity correlations. As impurity concentration increases, we generally find that the suppression of coherence temperature is significantly reduced. The results are discussed in the context of available experimental data.

7 pages, 2 figures

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• Scale-free structural organization of oxygen interstitials in La2CuO4+y
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• The underscreened Kondo lattice model applied to heavy fermion uranium compounds
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Cited by in corpus (5)

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• From local moment to mixed-valence regime in Ce(1-x)Yb(x)CoIn5 alloys
• Quantum criticality and superconducting pairing in Ce(1-x)Yb(x)CoIn5 alloys