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Electronic structure of PtPb<sub>4</sub> studied by Angle-Resolved Photoemission Spectroscopy

ORAL

Abstract

We investigate the electronic structure of PtPb4 by using ultrahigh resolution, laser based Angle Resolved Photoemission Spectroscopy(ARPES) and Density functional theory(DFT) calculations. This material is a compound related to PtSn4, which exhibits exotic topological properties such as Dirac node arcs. The Fermi surface(FS) of PtPb4 has at least two electron pockets at the center of the Brillouin zone(BZ) and several hole pockets around the zone boundaries. Although the crystal structure has 4-fold symmetry, the ARPES data reveals a FS with only 2-fold symmetry, showing a rectangular FS sheet around X points and two intersected circular FS sheet around Y points. X-ray scattering data points to the stacking order as a key factor for the breaking of the 4-fold symmetry observed in ARPES data. The experimental results are in a reasonable agreement with the DFT calculations.

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Presenters

  • Kyungchan Lee

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory

Authors

  • Kyungchan Lee

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory

  • Daixiang Mou

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Lin-Lin Wang

    Ames Lab, Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Na Hyun Jo

    Iowa State University, Ames Laboratory, Iowa State University, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University/Ames Laboratory

  • Yun Wu

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory

  • Benjamin Schrunk

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory

  • John Wilde

    Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames

  • Manh Cuong Nguyen

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Amelia Estry

    Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Cai-Zhuang Wang

    Ames Laboratory, Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Department of Physics and Astronomy, Iowa State University, Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Andreas Kreyssig

    Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Ames IA 50011, USA, Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Ames Laboratory, Iowa State University, Dept. of Physics and Astronomy, Ames, Ames Laboratory, Ames, IA 50011, USA; Iowa State University, Ames, IA 50011, USA

  • Sergey L. Bud'ko

    Iowa State University, Ames Laboratory and Iowa State University, Ames Lab, Ames laboratory, Ames, IA, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University, Ames Laboratory, Division of Materials Sciences & Engineering, Ames Lab and Iowa State University, Iowa State University/Ames Laboratory

  • Kai-Ming Ho

    Iowa State University, Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Department of Physics and Astronomy, Iowa State University, Department of Physics and Astronomy, Iowa State University/Ames Laboratory

  • Paul C Canfield

    Iowa State University, Ames Laboratory and Iowa State University, Ames Lab, Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA, Ames laboratory, Ames, IA, Ames Laboratory, Iowa State University, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University, Ames Laboratory, Department of Physics and Astronomy, Iowa State University, Division of Materials Sciences & Engineering, Ames Lab and Iowa State University, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory

  • Adam Kaminski

    Physics and Astronomy, Iowa State University, Ames Laboratory, Iowa State University, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory