Quasiparticle bands and superconductivity in bilayer cuprates
A. I. Liechtenstein, O. Gunnarsson, O. K. Andersen, R. M. Martin
DOI 10.1103/PhysRevB.54.12505 · Physical Review B
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Abstract
We analyze the generic features of the energy spectrum for two coupled CuO2 layers with a realistic extended Hubbard model. The quasiparticle bands exhibit flat regions near X(Y) points in the Brillouin zone with a large reduction of the bonding-antibonding splitting and pinning of extended van Hove singularity to the Fermi level, which is more efficient for bilayers than for a single layer. In contrast to the results with simpler models, the superconducting temperature for dx2−y2 pairing is not lowered by the bilayer hopping. © 1996 The American Physical Society.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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