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Superconductivity and properties of FeTeOx films |
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| Authors: | YF Nie D Telesca B Sinkovic BO Wells |
| Institution: | a Department of Physics, University of Connecticut, Storrs, CT 06269, USA b Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA |
| Abstract: | Films of the parent compound FeTe can be made superconducting via the addition of interstitial oxygen. The process is reversible. We have characterized the new superconductors with a variety of experiments. X-ray diffraction shows that the superconductor has the same overall structure but a small lattice constant change compared to pure FeTe. X-ray absorption shows that superconducting FeTeOx has a nominal valence of 3+. DFT calculations show the most likely position for interstitial oxygen and confirm that such oxygen incorporation does not produce a large change in structure. |
| Keywords: | A Chalcogenides A Thin films D Superconductivity D X-ray absorption spectroscopy E Pulsed laser deposition |
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