On the scaling theory of antiferromagnetic ordering in frustrated Kondo lattices

Publication date: Available online 16 October 2019Source: Physics Letters AAuthor(s): V.Yu. IrkhinAbstractA scaling theory of the Kondo lattices with frustrated exchange interactions is developed, criterium of antiferromagnetic ordering being investigated. Depending on the bare model parameters, one or two quantum phase transitions into non-magnetic spin-liquid and Kondo Fermi-liquid ground states can occur with increasing the bare coupling constant. Whereas the renormalization of the magnetic moment in the ordered phase can reach orders of magnitude, spin fluctuation frequency and coupling constant are moderately renormalized in the spin-liquid phase. This justifies application of the scaling approach.

Source: Physics Letters A - October 19, 2019 Category: Physics Source Type: research