Sum rules and energy scales in BiSrCaCuO
| dc.creator | Santander-Syro, A. F. | |
| dc.creator | Lobo, R. P. S. M. | |
| dc.creator | Bontemps, N. | |
| dc.date | 2004-04-13 | |
| dc.date.accessioned | 2026-07-07T02:57:35Z | |
| dc.date.available | 2026-07-07T02:57:35Z | |
| dc.description | From very high accuracy reflectivity spectra, we have derived the optical conductivity and estimated the spectral weight up to various cut-off frequencies in underdoped Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ (Bi-2212). We show that, when evaluating the optical spectral weight over the full conduction band (1 eV), the kinetic energy decreases in the superconducting state, unlike in conventional BCS superconductors. As a consequence, the Ferrell-Glover-Tinkham sum rule is not satisfied up to this energy scale. This stands as a very unconventional behavior, contrasted with the overdoped Bi-2212 sample. | |
| dc.description | 6 pages with 3 figures included. Submitted to NATO Advanced Research Workshop Proceedings (Miami January 2004) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0404290 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0404290 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/23723 | |
| dc.subject | Superconductivity | |
| dc.title | Sum rules and energy scales in BiSrCaCuO | |
| dc.type | text |