2022/12/20 by Tse, Wai Hei Terence, Lupo, Carla, Sheridan, Evan +2
#FOS: Physical sciences #Superconductivity (cond-mat.supr-con)
paper · doi:10.48550/arxiv.2212.10109
Oxide heterostructures have repeatedly been shown to display apical properties at the interfaces, some of which favorable to the formation of two-dimensional electron systems, as well as high transition temperature superconductivity. In this study, we propose a novel heterostructure to potentially achieve near room-temperature superconductivity, via the carrier injection in cuprate interfaces with ferro-electrics. Using a digital design approach guided by density-functional theory, the systems of XTiO3/XCuO3/XTiO3 are thoroughly examined, confirming the formation of a two-dimensional electron gas at the cuprous oxide interface. Via the manipulation of lattice parameters, the key ingredients for two-dimensional electron gas formation is explored. We apply cluster dynamical mean-field theory on the cuprous oxide plane and probe the superconducting properties of the system XTiO3/XCuO3/XTiO3 . As a result, we see a marked increase of superconducting ordering parameter near the fully occupied regime, a known marker for the superconducting transition temperature.