Electronic structure of the electron-doped cuprate superconductors
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Within the framework of the kinetic energy driven d-wave superconductivity, the electronic structure of the electron doped cuprate superconductors is studied. It is shown that although there is an electron-hole asymmetry in the phase diagram, the electronic structure of the electron-doped cuprates in the superconducting-state is similar to that in the hole-doped case. With increasing the electron doping, the spectral weight in the $(π,0)$ point increases, while the position of the superconducting quasiparticle peak is shifted towards the Fermi energy. In analogy to the hole-doped case, the superconducting quasiparticles around the $(π,0)$ point disperse very weakly with momentum.
8 pages, 3 figures, accepted for publication in Phys. Lett. A
8 pages, 3 figures, accepted for publication in Phys. Lett. A