Abstract
Using a tight-binding two-orbital () model and a random phase approximation treatment of the spin-fluctuation pairing vertex, we calculate the pairing strengths for a cuprate model in which the hole doping varies from to . We find two domes of pairing strength: one corresponding to the traditional low hole doping regime and the other to the extremely overdoped regime discussed by Geballe and Marezio [Physica C 469, 680 (2009)]. In the overdoped regime we find that there is significant pairing strength in both the -wave and channels.
- Received 11 September 2018
- Revised 11 April 2019
DOI:https://doi.org/10.1103/PhysRevB.99.224515
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