Random Kondo Alloys

Abstract

The interplay between the Kondo effect and disorder is studied. This is done by applying a matrix coherent potential approximation (CPA) and treating the Kondo interaction on a mean-field level. The resulting equations are shown to agree with those derived by the dynamical mean-field method (DMFT). By applying the formalism to a Bethe tree structure with infinite coordination the effect of diagonal and off-diagonal disorder are studied. Special attention is paid to the behavior of the Kondo- and the Fermi liquid temperature as function of disorder and concentration of the Kondo ions. The non monotonous dependence of these quantities is discussed.

20 pages, 9 figures

References in corpus (3)

• Mott--Hubbard transition vs. Anderson localization of correlated, disordered electrons
• Strongly Inhomogeneous Phases and Non-Fermi Liquid Behavior in Randomly Depleted Kondo Lattices
• Free Magnetic Moments in Disordered Metals

Cited by in corpus (17)

• Kondo lattices with inequivalent local moments: Competitive vs. co-operative Kondo screening
• Kondo-Anderson Transitions
• Multiple temperature scales of the periodic Anderson model: the slave bosons approach
• Influence of disorder on the transport properties of heavy-fermion systems
• Distributed Hybridization Model for Quantum Critical Behavior in Magnetic Quasicrystals
• Kondo-lattice-mediated interactions in flat band systems
• Crossover from dilute-Kondo system to heavy-fermion system
• Dynamical mean-field theory of the Anderson-Hubbard model with local and non-local disorder in tensor formulation
• Lifshitz transition in Kondo alloys
• Towards a Comprehensive Theory of Metal-Insulator Transitions in Doped Semiconductors
• Effect of Disorder on Fermi surface in Heavy Electron Systems
• Kondo-hole substitution in heavy fermions: dynamics and transport
• Novel duality in disorder driven local quantum criticality
• Competition between Kondo and RKKY correlations in the presence of strong randomness
• Breakdown of coherence in Kondo alloys: crucial role of concentration vs band filling
• Rayleigh anomalies and disorder-induced mixing of polarizations at nanoscale in amorphous solids. Testing 1-octyl-3-methylimidazolium chloride glass
• Photo-emission signatures of coherence breakdown in Kondo alloys: dynamical mean-field theory approach