Layer controlled growth of oxide superconductors

Atomic layer growth control of SrCuO2-based artificial lattices is demonstrated on a SrTiO3(001) surface. Precise control of atomic layer growth has been successfully carried out by in situ monitoring of the RHEED intensities. It was found that the interface layer between the substrate surface and the material to be grown must be carefully constructed and that the introduction of two layers of Sr—O was necessary for the epitaxial growth of tetragonal SrCuO2.