Magnetic-properties of the 2-dimensional Hubbard-model
| Title | Magnetic-properties of the 2-dimensional Hubbard-model |
| Publication Type | Journal Article |
| Year of Publication | 1991 |
| Authors | Chen L, Bourbonnais C, Li T, Tremblay A-MS |
| Journal | Physical Review Letters |
| Volume | 66 |
| Pagination | 369–372 |
| Abstract | Monte Carlo simulations of the magnetic structure factor of the two-dimensional Hubbard model are in qualitative agreement with the slave-boson approach and, in the low-temperature intermediate-coupling limit, they are in even better quantitative agreement with the random-phase approximation, as long as a renormalized repulsion U is used. This renormalization comes from maximally crossed diagrams, which account for two-body short-range correlations. One of the consequences is that Stoner ferromagnetism is not a generic property of the two-dimensional one-band Hubbard model. |
fichier:
