A Coulomb gas approach to the anisotropic one-dimensional Kondo lattice model at arbitrary filling
arXiv:cond-mat/0204619 · doi:10.1103/PhysRevB.66.174409
Abstract
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.
19 pages, 9 figures