Schwinger boson approach to the fully screened Kondo model

J. Rech, P. Coleman, G. Zaránd, O. Parcollet

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We apply the Schwinger boson scheme to the fully screened Kondo model and generalize the method to include antiferromagnetic interactions between ions. Our approach captures the Kondo crossover from local moment behavior to a Fermi liquid with a nontrivial Wilson ratio. When applied to the two-impurity model, the mean-field theory describes the “Varma-Jones†quantum phase transition between a valence bond state and a heavy Fermi liquid.

Original languageEnglish
Article number016601
JournalPhysical Review Letters
Volume96
Issue number1
DOIs
Publication statusPublished - Jan 13 2006

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Fermi liquids
bosons
crossovers
valence
moments
impurities
ions
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Schwinger boson approach to the fully screened Kondo model. / Rech, J.; Coleman, P.; Zaránd, G.; Parcollet, O.

In: Physical Review Letters, Vol. 96, No. 1, 016601, 13.01.2006.

Research output: Contribution to journalArticle

Rech, J. ; Coleman, P. ; Zaránd, G. ; Parcollet, O. / Schwinger boson approach to the fully screened Kondo model. In: Physical Review Letters. 2006 ; Vol. 96, No. 1.
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