Quasiparticle scattering in type-II Weyl semimetal MoTe2

Chun-Liang Lin, Ryuichi Arafune, Emi Minamitani, Maki Kawai, Noriaki Takagi

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4 Scopus citations

Abstract

The electronic structure of type-II Weyl semimetal molybdenum ditelluride (MoTe2) is studied by using scanning tunneling microscopy and density functional theory calculations. Through measuring energy-dependent quasiparticle interference (QPI) patterns with a cryogenic scanning tunneling microscope, several characteristic features are found in the QPI patterns. Two of them arise from the Weyl semimetal nature; one is the topological Fermi arc surface state and the other can be assigned to be a Weyl point. The remaining structures are derived from the scatterings relevant to the bulk electronic states. The findings lead to further understanding of the topological electronic structure of type-II Weyl semimetal MoTe2.

Original languageEnglish
Article number105703
JournalJournal of Physics Condensed Matter
Volume30
Issue number10
DOIs
StatePublished - 15 Feb 2018

Keywords

  • Fermi arc
  • MoTe
  • quasiparticle interference
  • scanning tunneling microscopy
  • topological matter
  • transition metal dichalcogenides
  • Weyl semimetals

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