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Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model

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 نشر من قبل Daniel Julio Garcia
 تاريخ النشر 2003
  مجال البحث فيزياء
والبحث باللغة English
 تأليف D. J. Garcia




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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.



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