ARPES Study on the Electronic Structure and Superconducting Gap of Reentrant C<sub>4</sub> Phase in (Sr<sub>,</sub>Na)Fe<sub>2</sub>As<sub>2</sub>

ORAL

Abstract

The relationship between magnetism, nematicity and superconductivity is important in understanding the superconductivity mechanism of the iron-based superconductors. Recently, reentrant C4 tetragonal magnetic phase has been identified as a universal behavior within a narrow doping range in the hole-doped 122 iron-based superconductors in the nematic phase. Here we report high resolution laser-based angle-resolved photoemission (ARPES) measurements on the (Sr,Na)Fe2As2 superconductors which exhibits reentrant C4 magnetic phase. We measured the electronic structure distortion caused by the reentrant C4 magnetic phase and the superconducting gap structure. Our results provide new insight in understanding the reentrant C4 magnetic phase and superconductivity in the iron-based superconductors.

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Presenters

  • Jianwei Huang

    • Institute of Physics, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)

Authors

  • Jianwei Huang

    • Institute of Physics, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)

  • Lin Zhao

    • Chinese Academy of Scienes (CAS)
    • Institute of Physics, Chinese Academy of Sciences

  • Run Yang

    • Institute of Physics, Chinese Academy of Sciences
    • Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
    • Institute of Physics, Chines Academy of Science

  • Cong Li

    • Institute of Physics, Chinese Academy of Sciences

  • Yongqing Cai

    • Institute of Physics, Chinese Academy of Sciences

  • Qiang Gao

    • Institute of Physics, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)

  • Guodong Liu

    • Institute of Physics, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)
    • Chinese Academy of Scienes (CAS)

  • Chuangtian Chen

    • Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)
    • Chinese Academy of Scienes (CAS)

  • Zuyan Xu

    • Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)
    • Chinese Academy of Scienes (CAS)

  • Xianggang Qiu

    • Institute of Physics, Chinese Academy of Sciences

  • Xingjiang Zhou

    • Institute of Physics, Chinese Academy of Sciences
    • Chnese Academy of Sciences(CAS)
    • Chinese Academy of Scienes (CAS)