Preparation and superconductivity of iron selenide thin films

Authors :: Han, Y.
Li, W. Y.
Cao, L. X.
Zhang, S.
Xu, B.
Zhao, B. R.
Source :: Journal of Physics: Condensed Matter, 21, 235702 (2009)
Publication Year :: 2009
Abstract: FeSex (x = 0.80, 0.84, 0.88, 0.92) thin films were prepared on SrTiO3(001) (STO), (La,Sr)(Al,Ta)O3(001) (LSAT), and LaAlO3(001) (LAO) substrates by pulsed laser deposition method. All thin films show single-phase and c-axis oriented epitaxial growth, and are superconducting. Among them, the FeSe0.88 thin films show Tc, onset of 11.8 K and Tc, 0 of 3.4 K. The upper critical magnetic field is estimated to be 14.0 T.<br />Comment: 12 pages, 4 figures, accepted by Journal of Physics: Condensed Matter