The ground-state properties of two holes on a 4 x 4 Hubbard cluster have been studied using a Lanczos algorithm at intermediate coupling U = 4. Several states have been found to lie within a very small energy range at the bottom of the spectrum. Although many properties of these states are remarkably similar, their overall symmetries are quite different, suggesting different possible scenarios in larger systems.
D-wave, dimer, and chiral states in the two-dimensional Hubbard model / Parola, A; Sorella, Sandro; Parrinello, M; Tosatti, E.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - 43:7(1991), pp. 6190-6193. [10.1103/PhysRevB.43.6190]
D-wave, dimer, and chiral states in the two-dimensional Hubbard model
Sorella, Sandro;
1991-01-01
Abstract
The ground-state properties of two holes on a 4 x 4 Hubbard cluster have been studied using a Lanczos algorithm at intermediate coupling U = 4. Several states have been found to lie within a very small energy range at the bottom of the spectrum. Although many properties of these states are remarkably similar, their overall symmetries are quite different, suggesting different possible scenarios in larger systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
