Superconductor-Metal Quantum Transition at the EuO/KTaO<sub>3</sub> Interface*
Yang Ma, Jiasen Niu, Wenyu Xing, Yunyan Yao, Ranran Cai, Jirong Sun, Xiaoming Xie, Xi Lin, Wei Han
Abstract
We report the experimental investigation of the superconductor-metal quantum phase transition of the EuO/KTaO 3 interface. Around the transition, a divergence of the dynamical critical exponent is observed, which supports the quantum Griffiths singularity in the EuO/KTaO 3 interface. The quantum Griffiths singularity could be attributed to large rare superconducting regions and quenched disorders at the interface. Our results could pave the way for studying the exotic superconducting properties at the EuO/KTaO 3 interface.
Topics & Concepts
Condensed matter physicsSuperconductivityQuantumQuantum phase transitionSingularityInterface (matter)Materials scienceDivergence (linguistics)PhysicsPhase transitionQuantum mechanicsMoleculeGeometryMathematicsGibbs isothermPhilosophyLinguisticsElectronic and Structural Properties of OxidesAdvanced Condensed Matter PhysicsMagnetic and transport properties of perovskites and related materials