Phase diagram of the one-dimensional Anderson lattice

We map out the phase diagram of the one-dimensional Anderson lattice by studying the ground-state magnetization as a function of band filling using the density matrix renormalization group technique. For strong coupling, we find that the quarter-filled system has an S=0 ground state with strong antiferromagnetic correlations. As additional electrons are put in, we find first a ferromagnetic phase, as reported by Mailer and Wolfle, and then a phase in which the ground state has total spin S=0. Within this S=0 phase, we find Ruderman-Kittel-Kasuya-Yosida oscillations in the spin-spin correlation functions.