In situ growth of superconducting NdFeAs(O,F) thin films by molecular beam epitaxy
- 26 July 2010
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 97 (4), 042509
- https://doi.org/10.1063/1.3464171
Abstract
Superconducting NdFeAs(O,F) thin films were grown on GaAs substrates by molecular beam epitaxy. Films grown with a sufficiently long growth time exhibited a clear superconducting transition with an onset temperature up to 48 K and zero resistance temperature up to 42 K without the need of an ex situ annealing process. Electron probe microanalysis and Hall coefficient measurements indicated that the superconducting films are doped with fluorine, and depth-profile analysis by Auger electron spectroscopy revealed the formation of a NdOF layer near the surface, which is probably connected with the fluorine doping.Keywords
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