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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2002

Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model

D. J. Garcia
  • Fonction : Auteur
K. Hallberg
  • Fonction : Auteur
C. D. Batista
  • Fonction : Auteur
M. Avignon
  • Fonction : Auteur
B. Alascio
  • Fonction : Auteur

Résumé

We study numerically the one-dimensional ferromagnetic Kondo lattice. This model is widely used to describe nickel and manganese perovskites. Due to the competition between double and super-exchange, we find a region where the formation of magnetic polarons induces a charge-ordered state. This ordering is present even in the absence of any inter-site Coulomb repulsion. There is an insulating gap associated to the charge structure formation. We also study the insulator-metal transition induced by a magnetic field which removes simultaneously both charge and spin ordering.

Dates et versions

hal-00131598 , version 1 (16-02-2007)

Identifiants

Citer

D. J. Garcia, K. Hallberg, C. D. Batista, Sylvain Capponi, Didier Poilblanc, et al.. Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2002, 65 (13), pp.134444. ⟨10.1103/PhysRevB.65.134444⟩. ⟨hal-00131598⟩
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