A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling

Details A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling

2002-04-29

arxiv.org/abs/cond-mat/0204619v1

Phys. Rev. B 66, 174409 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

19 pages, 9 figures

Scientific paper

10.1103/PhysRevB.66.174409

We establish a mapping of a general spin-fermion system in one dimension into a classical generalized Coulomb gas. This mapping allows a renormalization group treatment of the anisotropic Kondo chain both at and away from half-filling. We find that the phase diagram contains regions of paramagnetism, partial and full ferromagnetic order. We also use the method to analyze the phases of the Ising-Kondo chain.

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