We study the competition between the Kondo effect and frustrating exchange interactions in a Kondo-lattice model within a large-N dynamical mean-field theory. We find a $T=0$ phase transition between a heavy Fermi liquid and a spin liquid for a critical value of the exchange Jc=TK⁰, the single-impurity Kondo temperature. Close to the critical point, the Fermi-liquid coherence scale T^ is strongly reduced and the effective mass strongly enhanced. The regime T>T^ is characterized by spin-liquid magnetic correlations and non-Fermi-liquid properties. It is suggested that magnetic frustration is a general mechanism which is essential to explain the large effective mass of some metallic compounds such as LiV₂O₄.
No takes yet. Share an insight, caveat, or question.
Burdin et al. (2002) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: