• DOI:10.1209/0295-5075/83/17002
Corpus ID: 96240327

Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO1−δ (Re = rare-earth metal) without fluorine doping

@article{Ren2008SuperconductivityAP,
  title={Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO1−δ (Re = rare-earth metal) without fluorine doping},
  author={Zhi-An Ren and G. Che and Xiaoli Dong and Jie Yang and W. Lu and W. Yi and Xiao-li Shen and Z. Li and Li-ling Sun and F. Zhou and Z. Zhao},
  journal={EPL},
  year={2008},
  volume={83},
  pages={17002}
}

Zhi-An Ren, G. Che, +8 authors Z. Zhao

Published 2008

Materials Science, Physics

EPL

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Here we report a new class of superconductors prepared by high-pressure synthesis in the quaternary family ReFeAsO1−δ (Re=Sm, Nd, Pr, Ce, La) without fluorine doping. The onset superconducting critical temperature (Tc) in these compounds increases with the reduction of the Re atom size, and the highest Tc obtained so far is 55 K in SmFeAsO1−δ. For the NdFeAsO1−δ compound with different oxygen concentration a dome-shaped phase diagram was found.