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Large Anamolous Hall Effect in New Weyl Semimetal Kagome System: Fe<sub>3</sub>Sn

ORAL

Abstract

Weyl semimetals (WSM) are recently discovered novel topological matters present in the crystals which break either time reversal symmetry or inversion symmetry or both. WSM possess crossing of the non degenerate valence and conduction band forming a Weyl node which is robust to any type of local perturbations. Here, by means of density functional theory calculations, we have investigated the electronic, magnetic and topological properties of layered kagome metal Fe3Sn. The magnetic ground state is ferromagnetic with an in-plane easy axis. Furthermore, Fe3Sn is identified as a new WSM with large value of anomalous Hall conductivity (AHC) close to the Fermi level. We will discuss in detail how the large AHC arises in new WSM Fe3Sn.

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Presenters

  • Madhav Ghimire

    Central Department of Physics, Tribhuvan University

Authors

  • Madhav Ghimire

    Central Department of Physics, Tribhuvan University

  • Bishnu Belbase

    Central Department of Physics, Tribhuvan University

  • Bishnu Karki

    Central Department of Physics, Tribhuvan University

  • Linda Ye

    Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology

  • Jhih-Shih You

    Department of Physics, National Taiwan Normal University, National Taiwan Normal University Taipei

  • Jorge I. Facio

    Institute for Theoretical Solid State Physics, IFW Dresden, IFW - Dresden

  • Joseph Checkelsky

    Massachusetts Institute of Technology, Department of Physics, Cambridge, MA, USA, Massachusetts Institute of Technology MIT, Department of Physics, Massachusetts Institute of Technology, Massachusetts Institute of Technology, Physics, Massachusetts Institute of Technology

  • Manuel Richter

    Institute for Theoretical Solid State Physics, IFW Dresden

  • Jeroen Van den Brink

    Institute for Theoretical Solid State Physics, IFW Dresden, IFW Dresden, Leibniz-Institut fur Festkorper- und Werkstoffforschung, IFW - Dresden