Superconductivity at 56 K in Samarium-doped SrFeAsF

G. Wu; Y. L. Xie; H. Chen; M. Zhong; R. H. Liu; B. C. Shi; Q. J. Li; X. F. Wang; T. Wu; Y. J. Yan; J. J. Ying; X. H. Chen

Superconductivity at 56 K in Samarium-doped SrFeAsF

Superconductivity 2009-03-20 v3

Authors: G. Wu , Y. L. Xie , H. Chen , M. Zhong , R. H. Liu , B. C. Shi , Q. J. Li , X. F. Wang , T. Wu , Y. J. Yan , J. J. Ying , X. H. Chen

View on arXiv ↗ PDF ↗

Abstract

We synthesized the samples Sr $_{1-x}$ Sm $_x$ FFeAs with ZrCuSiAs-type structure. These samples were characterized by resistivity and susceptibility. It is found that substitution of rare earth metal for alkaline earth metal in this system suppresses the anomaly in resistivity and induces superconductivity. Superconductivity at 56 K in nominal composition Sr $_{0.5}$ Sm $_{0.5}$ FFeAs is realized, indicating that the superconducting transition temperatures in the iron arsenide fluorides can reach as high as that in oxypnictides with the same structure.

Keywords

superconductivity iron-based superconductor high-temperature superconductivity

Cite

@article{arxiv.0811.0761,
  title  = {Superconductivity at 56 K in Samarium-doped SrFeAsF},
  author = {G. Wu and Y. L. Xie and H. Chen and M. Zhong and R. H. Liu and B. C. Shi and Q. J. Li and X. F. Wang and T. Wu and Y. J. Yan and J. J. Ying and X. H. Chen},
  journal= {arXiv preprint arXiv:0811.0761},
  year   = {2009}
}

Comments

3 pages, 3 figures,Journal of Physics Condensed Matter (2009) in press

Superconductivity at 56 K in Samarium-doped SrFeAsF

Abstract

Keywords

Cite

Comments

Related papers