Properties of the electron-doped infinite-layer superconductor Sr1−xLaxCuO2 epitaxially grown by pulsed laser deposition
J. Tomaschko, V. Leca, T. Selistrovski, S. Diebold, J. Jochum, R. Kleiner, D. Koelle
DOI 10.1103/PhysRevB.85.024519 · Physical Review B
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Abstract
Thin films of the electron-doped infinite-layer cuprate superconductor Sr1−xLaxCuO2 (SLCO) with doping x≈0.15 were grown by means of pulsed laser deposition. (001)-oriented KTaO3 and SrTiO3 single crystals were used as substrates. In case of SrTiO3, a BaTiO3 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 T=4.2K. We discuss in detail the influence of different process parameters on the final film properties.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr1-xLaxCuO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | midpoint |
| Ln2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| Sr1-xLnxCuO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 43 | Pressure not reported | unknown |
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