Physics – Condensed Matter – Superconductivity
Scientific paper
2008-08-14
Appl. Phys. Express 1, 101702 (2008)
Physics
Condensed Matter
Superconductivity
Revised manuscript: Accepted for publication in Appl. Phys. Express
Scientific paper
10.1143/APEX.1.101702
Superconducting epitaxial films of Fe-based layered arsenide, Co-doped SrFe2As2, were grown at 700oC on mixed perovskite (La, Sr)(Al, Ta)O3 (001) single-crystal substrates by pulsed-laser deposition. Both the epitaxial film and an (001)-oriented film grown at 600oC exhibited superconducting transitions at ~ 20 K. The zero-resistance states of the epitaxial film were sustained under a magnetic field (H) of 9 T at 9 K when H was parallel to the c-axis, while they were sustained at higher temperatures up to 10 K for H parallel to the a-axis. This is the first demonstration of superconducting thin films of FeAs-based new superconductors.
Hiramatsu Hidenori
Hirano Masahiro
Hosono Hideo
Kamiya Toshio
Katase Takayoshi
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