Enhanced Local Moment Formation in a Chiral Luttinger Liquid

Details Enhanced Local Moment Formation in a Chiral Luttinger Liquid Enhanced Local Moment Formation in a Chiral Luttinger Liquid

1996-07-11

arxiv.org/abs/cond-mat/9607083v1

Phys. Rev. B vol. 53, R468 (1996)

Physics

Condensed Matter

11 pages, no figures

Scientific paper

10.1103/PhysRevB.53.R468

We derive here a stability condition for a local moment in the presence of an interacting sea of conduction electrons. The conduction electrons are modeled as a Luttinger liquid in which chirality and spin are coupled. We show that an Anderson-U defect in such an interacting system can be transformed onto a nearly-Fermi liquid problem. We find that correlations among the conduction electrons stabilize the local moment phase. A Schrieffer-Wolff transformation is then performed which results in an anisotropic exchange interaction indicative of the Kondo effect in a Luttinger liquid. The ground-state properties of this model are then equivalent to those of the Kondo model in a Luttinger liquid.

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