S. Daul et Rm. Noack, DMRG STUDY OF FERROMAGNETISM IN A ONE-DIMENSIONAL HUBBARD-MODEL, Zeitschrift fur Physik. B, Condensed matter, 103(2), 1997, pp. 293-295
The one dimensional Hubbard model with nearest and (negative) next-nea
rest neighbour hopping has been studied with the density-matrix renorm
alization group (DMRG) method. A large region of ferromagnetism has be
en found for finite density and finite on-site interaction.