Coexistence of the spin-density-wave and superconductivity in the $\rm Ba_{1-x}K_xFe_2As_2$

ORAL

Abstract

The relation between the spin-density-wave (SDW) and superconducting order is a central topic in current research on the FeAs-based high $T_c$ superconductors. Conflicting results exist in the LaFeAs(O,F)-class of materials, for which whether the SDW and superconductivity are mutually exclusive or they can coexist has not been settled. Here we show that for the $\rm (Ba,K)Fe_2As_2$ system, the SDW and superconductivity can coexist in an extended range of compositions. The availability of single crystalline samples and high value of the energy gaps would make the materials a model system to investigate the high $T_c$ ferropnictide superconductivity. [arXiv:0807.3950 (2008)]

*Work at APS/ANL was supported by U.S. DOE/OS/BES, under Contract No. DE-AC02-06CH11357; at USTC by National Science Foundation of China \& Ministry of Science and Technology of China \& National Basic Research Program of china; at LANL by U.S. DOE/OS/BES.

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Authors

  • Yang Ren

    • APS, Argonne National Laboratory

  • H. Chen

    • University of Science and Technology of China

  • Y. Qiu

    • NIST Center for Neutron Research, NIST \& Univ. of Maryland

  • Wei Bao

    • Los Alamos National Laboratory

  • R.H. Liu

    • University of Science and Technology of China

  • G. Wu

    • University of Science and Technology of China

  • T. Wu

    • University of Science and Technology of China

  • Y.L. Xie

    • University of Science and Technology of China

  • X.F. Wang

    • University of Science and Technology of China

  • Q. Huang

    • NIST for Neutron Research, NIST

  • X.H. Chen

    • University of Science and Technology of China