Fluctuation exchange analysis of superconductivity in the standard three-band CuO2 model
Gökhan Esirgen, N. E. Bickers
DOI 10.1103/PhysRevB.57.5376 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The fluctuation exchange, or FLEX, approximation for interacting electrons is applied to study instabilities in the standard three-band model for CuO2 layers in the high-temperature superconductors. Both intraorbital and near-neighbor Coulomb interactions are retained. The filling dependence of the dx2−y2 transition temperature is studied in both the “hole-doped” and “electron-doped” regimes using parameters derived from constrained-occupancy density-functional theory for La2CuO4. The agreement with experiment on the overdoped hole side of the phase diagram is remarkably good, i.e., transitions emerge in the 40 K range with no free parameters. In addition the importance of the “orbital antiferromagnetic,” or flux phase, charge density channel is emphasized for an understanding of the underdoped regime.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 40 | Pressure not reported | unknown |
Similar papers
Pressure dependence of the superconducting transition temperature of superoxygenated La2CuO4+δ
similarity 0.95J. E. Schirber et al.
Source status unknown — claims are unverified
Superconductivity in the Mn5Si3-type Zr5Sb3 system
similarity 0.94B. Lv et al.
Source status unknown — claims are unverified
Effect of oxygen on the filamentary superconductivity of the La2−xCuO4−δ system
similarity 0.93S. W. Hsu et al.
Source status unknown — claims are unverified
Role of the Madelung energy in hole conductivity in copper oxides: Difference between semiconductors and high-Tc superconductors
similarity 0.93J. B. Torrance & R. M. Metzger
Source status unknown — claims are unverified
Superconductivity under pressure of La2−xBaxCuO4 (0.05≤x≤0.25) and Nd1.85Ce0.15CuO4−δ
similarity 0.93W. J. Liverman et al.
Source status unknown — claims are unverified
Epitaxial Strain and Superconductivity in La2−xSrxCuO4 Thin Films
similarity 0.93I. Bozovic et al.
Source status unknown — claims are unverified