Possible explanation for the absence of bilayer splitting in YBCO
| dc.creator | Monien, H. | |
| dc.creator | Elstner, N. | |
| dc.creator | Millis, A. J. | |
| dc.date | 1997-07-04 | |
| dc.date.accessioned | 2026-07-07T09:11:53Z | |
| dc.date.available | 2026-07-07T09:11:53Z | |
| dc.description | It has been claimed that the absence of the bilayer splitting in the high-temperature superconductor YBCO is a strong experimental indication that there are no coherent quasiparticles present in the CuO planes. We study a pair of strongly correlated planes which are connected by a hopping transfer integral $t_{\perp}$ in the limit of large in-plane coordination number. The effect of the correlation is incorporated in a dynamical mean-field theory, where the Weiss field is determined by a two-site Hubbard Hamiltonian. We have solved this problem by numerical techniques and present results for the spectral function $ρ$ for relevant parameters of the model. For small $t_{\perp}$ we find the coherent hoping between planes to be proportional to the in-plane quasiparticle renormalisation. | |
| dc.description | 4 pages, RevTeX, 4 eps figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9707051 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9707051 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/151842 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Possible explanation for the absence of bilayer splitting in YBCO | |
| dc.type | text |