Publication
Physica B: Physics of Condensed Matter
Paper

Pair correlation effects in heavy fermions

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Abstract

We summarize progress in studying a model of two Kondo impurities interacting directly with a conduction electron sea and indirectly with each other. In the presence of particle-hole symmetry, a critical point exists at finite ratio of (antiferromagnetic) RKKY coupling to Kondo temperature. For the more general case of no particle-hole symmetry, however, indications from both a 1 N (mean field) expansion and numerical renormalization group studies of potential scattering are that the transition is washed out. We discuss the implications of these findings on pair correlations in a real (lattice) system. © 1991.

Date

01 May 1991

Publication

Physica B: Physics of Condensed Matter

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