Electric field control of superconductivity at the LaAlO <sub>3</sub> /KTaO <sub>3</sub> (111) interface
Zheng Chen, Yuan Liu, Hui Zhang, Zhongran Liu, He Tian, Yanqiu Sun, Meng Zhang, Yi Zhou, Jirong Sun, Yanwu Xie
Abstract
is the transition temperature. The electric gating has only a minor effect on carrier density but a strong one on mobility. We interpret the tuning of mobility in terms of change in the spatial profile of the carriers in the interface and hence, effective disorder. As the temperature is decreased, the resistance saturates at the lowest temperature on both superconducting and insulating sides, suggesting the emergence of a quantum metallic state associated with a failed superconductor and/or fragile insulator.
Topics & Concepts
SuperconductivityInterface (matter)Electric fieldCondensed matter physicsField (mathematics)Materials scienceHigh-temperature superconductivityPhysicsMathematicsQuantum mechanicsPure mathematicsCapillary numberComposite materialCapillary actionElectronic and Structural Properties of OxidesMagnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter Physics