Abstract
Thin films of the electron-doped infinite-layer cuprate superconductor SrLaCuO (SLCO) with doping were grown by means of pulsed laser deposition. (001)-oriented KTaO and SrTiO single crystals were used as substrates. In case of SrTiO, a BaTiO thin film was deposited prior to SLCO, acting as buffer layer providing tensile strain to the SLCO film. To induce superconductivity, the as-grown films were annealed under reducing conditions, which will be described in detail. The films were characterized by reflection high-energy electron diffraction, atomic force microscopy, x-ray diffraction, Rutherford backscattering spectroscopy, and electric transport measurements at temperatures down to K. We discuss in detail the influence of different process parameters on the final film properties.
7 More- Received 20 December 2011
DOI:https://doi.org/10.1103/PhysRevB.85.024519
©2012 American Physical Society