Strongly Inhomogeneous Phases and Non-Fermi Liquid Behavior in Randomly Depleted Kondo Lattices

Abstract

We investigate the low-temperature behavior of Kondo lattices upon random depletion of the local $f$-moments, by using strong-coupling arguments and solving SU($N$) saddle-point equations on large lattices. For a large range of intermediate doping levels, between the coherent Fermi liquid of the dense lattice and the single-impurity Fermi liquid of the dilute limit, we find strongly inhomogeneous states that exhibit distinct non-Fermi liquid characteristics. In particular, the interplay of dopant disorder and strong interactions leads to rare weakly screened moments which dominate the bulk susceptibility. Our results are relevant to compounds like Ce_{x}La_{1-x}CoIn_5 and Ce_{x}La_{1-x}Pb_3

4 pages, 5 figures

References in corpus (2)

• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Two-fluid behavior of the Kondo lattice in the 1/N slave boson approach

Cited by in corpus (8)

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• Strong-coupling limit of depleted Kondo- and Anderson-lattice models
• Kondo holes in topological Kondo insulators: Spectral properties and surface quasiparticle interference
• Determinant Quantum Monte Carlo Study of Exhaustion in the Periodic Anderson Model
• Spectral changes in layered $f$-electron systems induced by Kondo hole substitution in the boundary-layer
• Kondo-hole substitution in heavy fermions: dynamics and transport