The charge asymmetry in superconductivity of hole- and electron-doped cuprates
arXiv:cond-mat/0501549 · doi:10.1016/j.physleta.2005.02.068
Abstract
Within the t-t'-J model, the charge asymmetry in superconductivity of hole- and electron-doped cuprates is studied based on the kinetic energy driven superconducting mechanism. It is shown that superconductivity appears over a narrow range of doping in electron-doped cuprates, and the superconducting transition temperature displays the same kind of the doping controlled behavior that is observed in the hole-doped case. However, the maximum achievable superconducting transition temperature in the optimal doping in electron-doped cuprates is much lower than that of the hole-doped case due to the electron-hole asymmetry.
6 pages, 1 figure, added discussions