Superconductivity at Nanoscale
Functional oxides are recognized for their potential as next-generation electronic materials, and can be regarded as an alternative for the current semiconductor technology. Selected functional oxides can be stacked in to form multi-layer heterostructures exhibiting an enhancement of diﬀerent properties or in some cases new properties with respect to the parent compounds. We study heterostructures of copper-oxide based high-temperature superconductors and high-dielectric-constant insulators. Obtaining high quality interface requires clear understanding of the grow process: material diffusion, nucleation and the formation of crystal lattices. In- situ Reflection High-Energy Electron Diffraction (RHEED) system is used to monitor growing condition in real time. Quality of ultrathin structures is studded with different experimental technique, such as XRD, AFM, FIB-SEM, XPS and TEM.