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Topological Semimetals with Butterfly-like Four-Point Intersecting Ellipses

ORAL

Abstract

Recent years, the exotic properties of topological semimetals have garnered great attention and efforts in seeking for new topological phases and material realization. In this work, we introduce a new type of nodal line, the butterfly-like four-point-intersecting-ellipses (FPIE) residing in a plane. We identify the criteria for the existence of the FPIE in a time reversal invariant spinless fermion system with negligible spin-orbital coupling (SOC). In addition we demonstrate that its emergence is possible in 7 out of 230 space groups, and identify the locations it would emerge in the Brillouin zone (BZ). Using first-principles band structure calculations, we predict a family of compounds as candidates hosting the FPIE in the Fermi surface (FS) with vanishing SOC.

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Presenters

  • XIAOTING ZHOU

    National Cheng Kung University, Physics and Astronomy, California State University, Northridge, Department of Physics and Astronomy, California State University, Northridge

Authors

  • XIAOTING ZHOU

    National Cheng Kung University, Physics and Astronomy, California State University, Northridge, Department of Physics and Astronomy, California State University, Northridge

  • Hugo Aramberri

    Luxembourg Inst of Science and Technology, Physics and Astronomy, California State University, Northridge, Department of Physics and Astronomy, California State University, Northridge

  • Cheng-Yi Huang

    Academia Sinica, Physics and Astronomy, California State University, Northridge, Institute of Physics, Academia Sinica, Taipei, Taiwan

  • Maia G Vergniory

    Donostia International Physics Center, Donostia International Physics Center, Donostia-San Sebastian, Spain

  • Hsin Lin

    Academia Sinica, Physics, Academia Sinica, Institute of Physics, Academia Sinica, Taipei, Taiwan, Institute of Physics, Academia Sinica

  • Nicholas Kioussis

    California State University, Northridge, Physics and Astronomy, California State University, Northridge, Department of Physics and Astronomy, California State University, Northridge