Electronic structure of kinetic energy driven superconductors in the presence of bilayer splitting

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, then the observed peak-dip-hump structure around the $[\pi ,0]$ 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 the doping concentration. In analogy to the normal state case, both electron antibonding peak and bonding hump have the weak dispersions around the $[\pi ,0]$ point.

11 pages, 4 figures, replotted figures and added references, accepted for publication in Phys. Rev. B

References in corpus (4)

• Measuring the gap in ARPES experiments
• The magnetic nature of superconductivity in doped cuprates
• The resonant magnetic mode: a common feature of high-$T_C$ superconductors
• Electronic structure of kinetic energy driven superconductors

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• Electronic Raman response in electron-doped cuprate superconductors
• Pseudogap and its connection to particle-hole asymmetry electronic state and Fermi arcs in cuprate superconductors