Itinerant ferromagnetism in the repulsive Hubbard chain with spin-anisotropic odd-wave attraction
Itinerant ferromagnetism in the repulsive Hubbard chain with spin-anisotropic odd-wave attraction
The ground-state properties of the Hubbard chain with on-site repulsion and anisotropic nearest-neighbor attraction are investigated by means of density matrix renormalization group calculations. The non-local attraction acts between fermions of one spin component only, mimicking the effect of p-wave Feshbach resonances in cold-atom systems. We analyze the onset of …