Short-coherence length superconductivity in the Attractive Hubbard Model in three dimensions
| dc.creator | Engelbrecht, Jan R. | |
| dc.creator | Zhao, Hongbo | |
| dc.date | 2001-10-17 | |
| dc.date.accessioned | 2026-07-07T07:56:53Z | |
| dc.date.available | 2026-07-07T07:56:53Z | |
| dc.description | We study the normal state and the superconducting transition in the Attractive Hubbard Model in three dimensions, using self-consistent diagrammatics. Our results for the self-consistent $T$-matrix approximation are consistent with 3D-XY power-law critical scaling and finite-size scaling. This is in contrast to the exponential 2D-XY scaling the method was able to capture in our previous 2D calculation. We find the 3D transition temperature at quarter-filling and $U=-4t$ to be $T_c=0.207t$. The 3D critical regime is much narrower than in 2D and the ratio of the mean-field transition to $T_c$ is about 5 times smaller than in 2D. We also find that, for the parameters we consider, the pseudogap regime in 3D (as in 2D) coincides with the critical scaling regime. | |
| dc.description | 4 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0110356 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0110356 | |
| dc.identifier | Phys. Rev. B 71, 054508 (2005) | |
| dc.identifier | doi:10.1103/PhysRevB.71.054508 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/127480 | |
| dc.subject | Superconductivity | |
| dc.title | Short-coherence length superconductivity in the Attractive Hubbard Model in three dimensions | |
| dc.type | text |