Tunable superconductivity and its origin at KTaO3 interfaces

oleh: Changjiang Liu, Xianjing Zhou, Deshun Hong, Brandon Fisher, Hong Zheng, John Pearson, Jidong Samuel Jiang, Dafei Jin, Michael R. Norman, Anand Bhattacharya

Format: Article
Diterbitkan: Nature Portfolio 2023-02-01

Deskripsi

A distinct dependence of the superconducting transition temperature on carrier density for electron gases formed at KTaO3 interfaces is reported. In addition, these interfaces are shown to play a role in mediating superconductivity in this system. The crystallographic orientation and carrier density dependent superconductivity at KTaO3 interfaces can be explained by Cooper pairing via inter-orbital interactions and quantum confinement.