Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO 1−δ (Re = rare-earth metal) without fluorine doping
Chinese Academy of Sciences · FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic · +1 more institution
Abstract
Here we report a new class of superconductors prepared by high pressure synthesis in the quaternary family ReFeAsO1-delta (Re = Sm, Nd, Pr, Ce, La) without fluorine doping. The onset superconducting critical temperature (Tc) in these compounds increases with the reduction of Re atom size, and the highest Tc obtained so far is 55 K in SmFeAsO1-delta. For the NdFeAsO1-delta system with different oxygen concentration a dome-shaped phase diagram was found.
Citation impact
- FWCI
- 49.56
- Percentile
- 100%
- References
- 10
Authors
11- ZRZhi‐An RenCorresponding
Chinese Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, National Laboratory for Superconductivity
- GCGuangcan Che
Chinese Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, National Laboratory for Superconductivity
- XDXiaoli Dong
Chinese Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, National Laboratory for Superconductivity
- JYJie Yang
Chinese Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, National Laboratory for Superconductivity
- WLWei Lu
Chinese Academy of Sciences, FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic, National Laboratory for Superconductivity
Topics & keywords
- Superconductivity
- Phase diagram
- Fluorine
- Doping
- Materials science
- Metal
- Phase (matter)
- Arsenic