Phase Diagram of the Electron-Doped Cuprate Superconductors

Abstract

We investigate the phase diagram of the electron-doped systems in high-Tc cuprates. We calculate the superconducting transition temperature Tc, the antiferromagnetic transition temperature TN, the NMR relaxation rate 1/T1 with the antiferromagnetic fluctuations in the fluctuation-exchange (FLEX) approximation and with the superconducting fluctuations in the self-consistent t-matrix approximation. Obtained phase diagram has common features as those in the hole-doped systems, including the antiferromagnetic state, the superconducting state and the spin gap phenomenon. Doping-dependences of TN, Tc and Tsg (spin gap temperature) are, however, different with those in the hole-doped systems. These differences are due to the intrinsic nature of the ingap states which are intimately related with the Zhang-Rice singlets in the hole-doped systems and are correlated d-electrons in the electron-doped systems, respectively, which has been shown in the d-p model.

4 pages, 3 figures

References in corpus (4)

• Superconducting Gap Anisotropy in Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$: Results from Photoemission
• Pseudogap Phenomena and Superconducting Fluctuations in Hubbard Model for High-Tc Cuprates
• Pseudogap Phenomena and Phase Diagram in the 2-Band Hubbard Model
• Critical Behaviour near the Mott Metal-Insulator Transition in a Two-band Hubbard Model

Cited by in corpus (7)

• Anomalous Transport Phenomena in Fermi Liquids with Strong Magnetic Fluctuations
• Asymmetry of the electronic states in hole- and electron-doped cuprates: Exact diagonalization study of the t-t'-t''-J model
• Influence of Spatial Correlations in Strongly Correlated Electron Systems: Extension to Dynamical Mean Field Approximation
• Critical point and the nature of the pseudogap of single-layered copper-oxide Bi${}_2$Sr${}_{2-x}$La${}_x$CuO${}_{6+\delta }$ superconductors
• Single-Particle Spectrum in the Electron-Doped Cuprates
• Asymmetry of Superconductivity in Hole- and Electron-doped Cuprates: Explanation within Two-Particle Self-Consistent Analysis for the Three-Band Model
• Internal static electric and magnetic field at the copper cite in a single crystal of the electron-doped high-T${}_c$ superconductor Pr${}_{1.85}$Ce${}_{0.15}$CuO${}_{4-y}$