Asymmetry of Superconductivity in Hole- and Electron-doped Cuprates: Explanation within Two-Particle Self-Consistent Analysis for the Three-Band Model

الأصل · EN

In the hole-doped cuprate superconductors, the superconducting transition temperature Tc exhibits a dome-like feature against the doping rate. By contrast, recent experiments reveal that Tc in the electron-doped systems monotonically increases as the doping is reduced, at least up to a very small doping rate. Here we show that this asymmetry is reproduced by performing a two-particle self-consistent analysis for the three-band model of the CuO₂ plane. This is explained as a combined effect of the intrinsic electron-hole asymmetry in systems comprising Cu3d and O2p orbitals and the band-filling-dependent vertex correction.