Observation of Nodal Line in Non-Symmorphic Topological Semimetal InBi

ORAL

Abstract

Topological nodal semimetal (TNS) is a general term to categorize semimetal whose touching energy bands has a non-trivial topological property. The subset of TNS called topological nodal line semimetal (TNLS) is also predicted where the touching bands form a degenerate one-dimension line. These touching bands may also be further protected by its crystal symmetry. In this talk, we will present our work on the bulk and surface electronic structure of the non-symmorphic TNLS in InBi by using angle resolved photoemission spectroscopy (ARPES). By changing the incoming photon energy, we have tracked the crossing points of the bulk bands and discovered the nodal-line feature along the kz direction, in agreement with the ab-initio calculations. Our work provides a new material platform for the study of these exotic topological quantum phases and paves the way for possible future applications.

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Presenters

  • Sandy Adhitia Ekahana

    Condensed Matter Physics, University of Oxford

Authors

  • Sandy Adhitia Ekahana

    Condensed Matter Physics, University of Oxford

  • Shu-Chun Wu

    Max Planck Institute, Max Planck Institute for Chemical Physics of Solids

  • Juan Jiang

    ShanghaiTech University, Advanced Light Source, School of Physical Science and Technology , Shanghaitech University

  • K. Okawa

    Tokyo Institute of Tech., Materials and Structures Laboratory, Tokyo institute of Technology

  • Dharmalingam Prabhakaran

    Condensed Matter Physics, University of Oxford, Physics Department, University of Oxford, Physics, University of Oxford, Physics , University of Oxford, University of Oxford, Physics, Oxford Univ

  • Chan-Cuk hwang

    Pohang Accelerator Laboratory

  • Sung-Kwan Mo

    Lawrence Berkeley National Lab, Lawrence Berkeley Natl Lab, Lawrence Berkeley National Laboratory, Pohang Accelerator Laboratory, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Takao Sasagawa

    MSL, Tokyo Inst of Tech, Tokyo Institute of Tech., Tokyo Institute of Technology, Laboratory for Materials and Structures, Tokyo Inst of Tech, Tokyo Inst. of Tech., Materials and Structures Laboratory, Tokyo institute of Technology

  • Claudia Felser

    Max Planck Institute for the Chemical Physics of Solids, Max Planck Institute for Chemical Physics of Solids, Max Planck Institute, solid State Chemistry, Max-Planck-Institute for Chemical Physics of Solids,

  • Binghai Yan

    Weizmann Institute of Science, Max Plank Institute for Microstructure Physics, Max Planck Institute for Chemical Physics of Solids, condensed matter, Weizmann Institute of Science

  • Zhongkai Liu

    ShanghaiTech University, School of Physical Science and Technology , Shanghaitech University, School of Physical Science and Technology, ShanghaiTech University

  • Yulin Chen

    Physics department, University of Oxford, University of Oxford, Oxford Unv., physics, university of oxford, Department of Physics, University of Oxford, Condensed Matter Physics, University of Oxford