Superconductivity of FeSe$_{1-x}$Te$_{x}$ Thin Films Grown by Pulsed Laser Deposition

Details Superconductivity of FeSe$_{1-x}$Te$_{x}$ Thin Films Grown by Pulsed Laser Deposition Superconductivity of FeSe$_{1-x}$Te$_{x}$ Thin Films Grown by Pulsed Laser Deposition

2009-08-10

arxiv.org/abs/0908.1316v1

Physics

Condensed Matter

Superconductivity

15 pages, 4 figures

Scientific paper

FeSe$_{1-x}$Te$_{x}$ thin films with PbO-type structure are successfully grown on MgO(100) and LaSrAlO$_{4}$(001) substrates from FeSe$_{1-x}$Te$_{x+d}$ polycrystalline targets by pulsed-laser deposition. The film deposited on the MgO substrate (film thickness $\sim$ 63 nm) shows superconductivity at 6.7 K (onset) and 5.5 K (zero resistivity). On the other hand, the film deposited on the LaSrAlO$_{4}$ substrate (film thickness $\sim$ 52 nm) exhibits only the onset of superconducting transition at 2.6 K, but does not show zero resistivity. This indicates the strong influence of epitaxial strain to superconducting properties of FeSe$_{1-x}$Te$_{x}$ thin films.

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