Interaction of Anderson impurities with high orbital angular momenta: Non-RKKY behavior and instability of Kondo lattice
The hybridization-induced interaction of Anderson impurities with orbital angular momentum l is revisited. At short distances R<R c ∝(l+1)/k F the interaction has antiferromagnetic sign and decays as (R c /R)4l. At larger distances R>R c the RKKY-like oscillatory interaction sets in. As l increases, the system will sooner or later enter the “short-distance” domain, where the intersite magnetic interaction dominates over the screening processes. This means that, contrary to previous expectations, the nonmagnetic state of the Anderson lattice is unstable at l→∞.
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