Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO <sub>1−δ</sub> (Re = rare-earth metal) without fluorine doping

2008691 citationsJournal Articlegreen Open Access

Authors

Zhi‐An Ren · Czech Academy of Sciences, Institute of Physics

Guangcan Che · National Laboratory for Superconductivity

Xiaoli Dong · Chinese Academy of Sciences

Jie Yang · National Laboratory for Superconductivity

Wei Lu · National Laboratory for Superconductivity

Wei Yi · Czech Academy of Sciences, Institute of Physics

Xiaoli Shen

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.

Topics & Keywords

Iron-based superconductors research Rare-earth and actinide compounds Physics of Superconductivity and Magnetism

Publication Details

Published in: Europhysics Letters (EPL)

Volume 83, Issue 1, pp. 17002-17002

DOI: 10.1209/0295-5075/83/17002

Field-Weighted Citation Impact: 48.44

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Superconductivity and phase diagram in iron-based arsenic-oxides ReFeAsO <sub>1−δ</sub> (Re = rare-earth metal) without fluorine doping

Authors

Abstract

Topics & Keywords

Publication Details