Superconductivity in Yttrium Iron Oxyarsenide System

Details Superconductivity in Yttrium Iron Oxyarsenide System Superconductivity in Yttrium Iron Oxyarsenide System

2008-08-03

arxiv.org/abs/0808.0288v2

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, Journal of Physics: Conference Series (Proceedings in the LT25 Low Temperature Physics Conference), Accept

Scientific paper

10.1088/1742-6596/150/5/052036

Iron-based oxypnictides substituted with yttrium have been prepared via a conventional solid state reaction. The product after first 50 hours of reaction showed diamagnetic-like transition at around 10 K but was not superconducting, while additional 72 hours of high temperature heat treatment was required to yield superconducting sample which was doped with fluoride. Temperature dependence of the susceptibility shows both screening and Meissner effect at around 10 K, while resistance as a function of temperature displayed a drop at around the same temperature.

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