Electronic structure of kinetic energy driven superconductors in the presence of bilayer splitting
Yu Lan, Jihong Qin, Shiping Feng
DOI 10.1103/PhysRevB.76.014533 · Physical Review B
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Abstract
Within the framework of the kinetic energy driven superconductivity, the electronic structure of bilayer cuprate superconductors in the superconducting state is studied. It is shown that the electron spectrum of bilayer cuprate superconductors is split into the bonding and antibonding components by the bilayer splitting, and the observed peak-dip-hump structure around the [π,0] point is mainly caused by this bilayer splitting, with the superconducting peak being related to the antibonding component and the hump being formed by the bonding component. The spectral weight increases with increasing doping concentration. In analogy to the normal-state case, both electron antibonding peak and bonding hump have the weak dispersions around the [π,0] point.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2Ca2Cu3O10+δ 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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