Comment on "Quantum Monte Carlo Evidence for Superconductivity in the Three-Band Hubbard Model in Two Dimensions"
| dc.creator | Endres, H. | |
| dc.creator | Hanke, W. | |
| dc.creator | Evertz, H. G. | |
| dc.creator | Assaad, F. F. | |
| dc.date | 1996-09-23 | |
| dc.date.accessioned | 2026-07-07T03:08:54Z | |
| dc.date.available | 2026-07-07T03:08:54Z | |
| dc.description | In a recent Letter, Kuroki and Aoki [Phys. Rev. Lett. 76, 440 (1996)] presented quantum Monte-Carlo (QMC) results for pairing correlations in the three-band Hubbard model, which describes the Cu-d_{x^2-y^2} and O-p_{x,y} orbitals present in the CuO_2 planes of high-T_c materials. In this comment we argue that (i) the used parameter set is not appropriate for the description of high-T_c materials since it does not satisfy the minimal requirement of a charge-transfer gap at half-filling, and (ii) the observed increase in the d_{x^2-y^2} channel is dominantly produced by the pair-field correlations without the vertex part. Hence, the claim of evidence of ODLRO is not justified. | |
| dc.description | 1 page latex and 2 eps-figures, uses epsfig, submitted to PRL | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9609219 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9609219 | |
| dc.identifier | Phys. Rev. Lett. 78, 160 (1997) | |
| dc.identifier | doi:10.1103/PhysRevLett.78.160 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27681 | |
| dc.subject | Condensed Matter | |
| dc.title | Comment on "Quantum Monte Carlo Evidence for Superconductivity in the Three-Band Hubbard Model in Two Dimensions" | |
| dc.type | text |