The charge asymmetry in superconductivity of hole- and electron-doped cuprates

Details The charge asymmetry in superconductivity of hole- and electron-doped cuprates The charge asymmetry in superconductivity of hole- and electron-doped cuprates

2005-01-23

arxiv.org/abs/cond-mat/0501549v2

Phys. Lett. A 339, 131 (2005)

Physics

Condensed Matter

Superconductivity

6 pages, 1 figure, added discussions

Scientific paper

10.1016/j.physleta.2005.02.068

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.

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