Kink structure in the electronic dispersion of high-Tc superconductors from the electron-phonon interaction
arXiv:0805.4276 · doi:10.1103/PhysRevB.77.184519
Abstract
We investigate the electronic dispersion of high-Tc superconductor on the basis of the two-dimensional three-band Hubbard model with the electron-phonon interaction together with the strong electron-electron interaction. In our model, it is shown across the hole-doped region of high-Tc superconductor that the electron-phonon interaction makes a dispersion kink, observed along the nodal direction, and that the small isotope effect appears on the electronic dispersion.
15 pages, 8 figures. to be published in Phys. Rev. B 77, No.18 (2008)
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