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 orbi tal angular momentum l is revisited. At short distances R < R-c propor tional to(l + 1)/k(F) the interaction has antiferromagnetic sign and d ecays as (R-c/R)(4l). At larger distances R > R-c the RKKY-like oscill atory interaction sets in. As l increases, the system will sooner or l ater 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 Anders on lattice is unstable at l --> infinity. (C) 1998 American Institute of Physics. [S0021-3640(98)01501-1].