Physics – Condensed Matter – Superconductivity
Scientific paper
2008-11-19
Physics
Condensed Matter
Superconductivity
27 pages, 10 figures, to appear in Physica C
Scientific paper
10.1016/j.physc.2008.11.006
Single phase, c-axis oriented, e-doped, Sr1-xLaxCuO2 thin films were epitaxially grown on KTaO3 and DyScO3 substrates by reactive rf sputtering. As-grown films being insulating due to oxygen excess, oxygen reduction is necessary to observe superconductivity. Two different procedures were employed to reach superconductivity. On one hand an in-situ reduction process was conducted on a series of films deposited on both types of substrates. On the other hand, an ex-situ reduction procedure was performed sequentially on a single film deposited on DyScO3. The study of the influence of oxygen reduction on the structural and electronic properties of the thin films is presented and discussed.
Jovanovic Vojin
Li Zaidong
Megtert S.
Raffy H.
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