Kondo insulators modeled by the one-dimensional Anderson lattice: A numerical-renormalization-group study
Kondo insulators modeled by the one-dimensional Anderson lattice: A numerical-renormalization-group study
In order to better understand Kondo insulators, we have studied both the symmetric and asymmetric Anderson lattices at half-filling in one dimension using the density matrix formulation of the numerical renormalization group. We have calculated the charge gap, spin gap and quasiparticle gap as a function of the repulsive interaction …