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Possible Superconductivity Induced by a Large Spin–Orbit Coupling in Carrier Doped Iridium Oxide Insulators: A Weak Coupling Approach
We study possible superconductivity in a carrier-doped iridium oxide insulator Sr2IrO4 based on an effective t2g three-orbital Hubbard model on the square lattice with a large spin–orbit coupling (SOC). Numerically solving the linearized Eliashberg equation for the superconducting (SC) gap function with the random phase approximation, we systematically examine both …