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Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model

D. J. Garcia·K. Hallberg·C. D. Batista·S. Capponi·D. Poilblanc·M. Avignon·B. Alascio
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Abstract

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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D. J. Garcia, K. Hallberg, C. D. Batista, S. Capponi, D. Poilblanc, M. Avignon, B. Alascio. 2003-03-15. Charge and spin inhomogeneous phases in the Ferromagnetic Kondo Lattice Model. https://doi.org/10.1103/physrevb.65.134444

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