Insulator to Superconductor Transitions and Strong Electronic Correlations in Single-Layer FeSe/SrTiO$_3$ Films

ORAL

Abstract

There has been a debate on whether an appropriate starting point in describing these compounds should go from an itinerant picture or a localized picture. The single-layer FeSe/SrTiO$_3$ films have recently generated great interest for its simplicity of crystal structure and electronic structure, as well as possible high superconducting transition temperature. In this talk, by performing detailed doping-dependent measurements with ARPES, we report an insulator-metal-superconductor transition in the S phase of the single-layer FeSe/SrTiO$_3$ films. The results indicate that strong electronic correlations should be considered in the single-layer FeSe/SrTiO$_3$ films that might be on the verge of Mott physics.

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Authors

  • Lin Zhao

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

  • Junfeng He

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

  • Xu Liu

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

  • Wenhao Zhang

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

  • Defa Liu

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

  • Shaolong He

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

  • Daixiang Mou

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

  • Fansen Li

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

  • Chenjia Tang

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

  • Zhi Li

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

  • Lili Wang

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

  • Yingying Peng

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

  • Yan Liu

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

  • Chaoyu Chen

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

  • Li Yu

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

  • Guodong Liu

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

  • Xiaoli Dong

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

  • Jun Zhang

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

  • Chuangtian Chen

    • Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing

  • Zuyan Xu

    • Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing

  • Xi Chen

    • State Key Lab of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing

  • Xucun Ma

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

  • Qikun Xue

    • State Key Lab of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing

  • Xingjiang Zhou

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