Renormalized band structure of CuO2 layers in superconducting compounds: A mean-field approach
M. Grilli, C. Castellani, C. Di Castro
DOI 10.1103/PhysRevB.42.6233 · Physical Review B
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Abstract
We have analyzed the band structure of a CuO2 plane including two copper orbitals (dx2-y2 and d3z2-r2) and two oxygen orbitals (px,py) in a tight-binding approximation. A Hubbard interaction between copper d holes has been considered with use of a slave-boson technique, while oxygen and copper holes interact via a nearest-neighbors Coulombic repulsion treated in the Hartree-Fock approximation. The resulting band structure opens the way to a comparison with the experiments and to some theoretical implications on the pairing mechanism of high-Tc superconductors.
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 |
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