d-wave superconductivity from electron-phonon interactions
| dc.creator | Hague, J. P. | |
| dc.date | 2007-04-04 | |
| dc.date.accessioned | 2026-07-07T07:54:34Z | |
| dc.date.available | 2026-07-07T07:54:34Z | |
| dc.description | I examine electron-phonon mediated superconductivity in the intermediate coupling and phonon frequency regime of the quasi-2D Holstein model. I use an extended Migdal-Eliashberg theory which includes vertex corrections and spatial fluctuations. I find a d-wave superconducting state that is unique close to half-filling. The order parameter undergoes a transition to s-wave superconductivity on increasing filling. I explain how the inclusion of both vertex corrections and spatial fluctuations is essential for the prediction of a d-wave order parameter. I then discuss the effects of a large Coulomb pseudopotential on the superconductivity (such as is found in contemporary superconducting materials like the cuprates), which results in the destruction of the s-wave states, while leaving the d-wave states unmodified. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0704.0633 | |
| dc.identifier | http://arxiv.org/abs/0704.0633 | |
| dc.identifier | Phys. Rev. B vol. 73, 060503(R) (2006) | |
| dc.identifier | doi:10.1103/PhysRevB.73.060503 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126661 | |
| dc.subject | Superconductivity | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | d-wave superconductivity from electron-phonon interactions | |
| dc.type | text |