Asymmetry of superconductivity in hole- and electron-doped cuprates: Explanation within two-particle self-consistent analysis for the three-band model

作者：Ogura Daisuke^*; Kuroki Kazuhiko

来源：Physical Review B, 2015, 92(14): 144511.

DOI：10.1103/PhysRevB.92.144511

In the hole-doped cuprate superconductors, the superconducting transition temperature T-c exhibits a domelike feature against the doping rate. By contrast, recent experiments reveal that T-c 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 Cu(3)d and O(2)p orbitals and the band-filling-dependent vertex correction.

• 出版日期2015-10-20