Abstract
We study the three-band Hubbard model for the copper oxide plane of the high-temperature superconducting cuprates using determinant quantum Monte Carlo and the dynamical cluster approximation (DCA) and provide a comprehensive view of the pairing correlations in this model using these methods. Specifically, we compute the pair-field susceptibility and study its dependence on temperature, doping, interaction strength, and charge-transfer energy. Using the DCA, we also solve the Bethe-Salpeter equation for the two-particle Green's function in the particle-particle channel to determine the transition temperature to the superconducting phase on smaller clusters. Our calculations reproduce many aspects of the cuprate phase diagram and indicate that there is an "optimal"value of the charge-transfer energy for the model where Tc is largest. These results have implications for our understanding of superconductivity in both the cuprates and other doped charge-transfer insulators.
Original language | English |
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Article number | 144514 |
Journal | Physical Review B |
Volume | 103 |
Issue number | 14 |
DOIs | |
State | Published - Apr 19 2021 |
Funding
The authors would like to thank K. Haule, G. Kotliar, H. Terletska, L. Chioncel, A. Georges, S. Karakuzu, P. Dee, and E. Huang for useful comments. This work was supported by the Scientific Discovery through Advanced Computing (SciDAC) program funded by the U.S. Department of Energy, Office of Science, Advanced Scientific Computing Research and Basic Energy Sciences, Division of Materials Sciences and Engineering. This research also used resources of the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility supported under Contract No. DE-AC05-00OR22725.