Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs

K. Sasmal; B. Lv; B. Lorenz; A. Guloy; F. Chen; Y. Xue; C. W. Chu

doi:10.1103/PhysRevLett.101.107007

Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs

Superconductivity 2008-09-09 v3 Strongly Correlated Electrons

Authors: K. Sasmal , B. Lv , B. Lorenz , A. Guloy , F. Chen , Y. Xue , C. W. Chu

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Abstract

A new hight Tc Fe-based compound system, AFe2As2 with A = K, Cs, K/Sr and Cs/Sr has been found. Through electron-doping, Tc of the A = K and Cs compounds rises to ~37 K, and finally enter a spin-density-wave state (SDW) through further electron doping with Sr. The observation demonstrates the crucial role of the (FeAs)-layers in the superconductivity in the Fe-based layered system and the special feature of elemental A-layers in this complex chemical system may provide new avenues to superconductivity at a higher Tc.

Keywords

superconductivity Fe-based compounds electron-doping spin-density-wave SDW high Tc (FeAs)-layers

Cite

@article{arxiv.0806.1301,
  title  = {Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs},
  author = {K. Sasmal and B. Lv and B. Lorenz and A. Guloy and F. Chen and Y. Xue and C. W. Chu},
  journal= {arXiv preprint arXiv:0806.1301},
  year   = {2008}
}

Comments

minor corrections, references completed, figures revised

Superconductivity up to 37 K in (A1-xSrx)Fe2As2 with A=K and Cs

Abstract

Keywords

Cite

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