Coherence Scale of the Kondo Lattice

Abstract : It is shown that the large-N approach yields two energy scales for the Kondo lattice model. The single-impurity Kondo temperature, $T_K$, signals the onset of local singlet formation, while Fermi liquid coherence sets in only below a lower scale, $T^{\star}$. At low conduction electron density $n_c$ ("exhaustion" limit), the ratio $T^{\star}/T_K$ is much smaller than unity, and is shown to depend only on $n_c$ and not on the Kondo coupling. The physical meaning of these two scales is demonstrated by computing several quantities as a function of $n_c$ and temperature.
Type de document :
Article dans une revue
Physical Review Letters, American Physical Society, 2000, 85 (5), pp.1048-1051. <10.1103/PhysRevLett.85.1048>
Liste complète des métadonnées


https://hal.archives-ouvertes.fr/hal-01555976
Contributeur : Bernadette Bergeret <>
Soumis le : mercredi 5 juillet 2017 - 10:22:18
Dernière modification le : vendredi 7 juillet 2017 - 01:12:35

Fichier

BurdinPRL2000_arXiv_cond-mat_0...
Fichiers produits par l'(les) auteur(s)

Licence


Distributed under a Creative Commons Paternité 4.0 International License

Identifiants

Collections

Citation

S. Burdin, A. Georges, D. R. Grempel. Coherence Scale of the Kondo Lattice. Physical Review Letters, American Physical Society, 2000, 85 (5), pp.1048-1051. <10.1103/PhysRevLett.85.1048>. <hal-01555976>

Partager

Métriques

Consultations de
la notice

54

Téléchargements du document

26