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Fermi Surface of The One-dimensional Kondo Lattice Model

S. Moukouri·L. G. Caron
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Abstract

We show a strong indication of the existence of a large Fermi surface in the one-dimensional Kondo lattice model. The characteristic wave vector of the model is found to be $k_F=(1+ρ)π/2$, $ρ$ being the density of the conduction electrons. This result is at first obtained for a variant of the model that includes an antiferromagnetic Heisenberg interaction $J_H$ between the local moments. It is then directly observed in the conventional Kondo lattice $(J_H=0)$, in the narrow range of Kondo couplings where the long distance properties of the model are numerically accessible.

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S. Moukouri, L. G. Caron. 1996-07-17. Fermi Surface of The One-dimensional Kondo Lattice Model. https://doi.org/10.1103/physrevb.54.12212

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