Nature Communications (Nov 2021)

A full gap above the Fermi level: the charge density wave of monolayer VS2

  • Camiel van Efferen,
  • Jan Berges,
  • Joshua Hall,
  • Erik van Loon,
  • Stefan Kraus,
  • Arne Schobert,
  • Tobias Wekking,
  • Felix Huttmann,
  • Eline Plaar,
  • Nico Rothenbach,
  • Katharina Ollefs,
  • Lucas Machado Arruda,
  • Nick Brookes,
  • Gunnar Schönhoff,
  • Kurt Kummer,
  • Heiko Wende,
  • Tim Wehling,
  • Thomas Michely

DOI
https://doi.org/10.1038/s41467-021-27094-x
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 9

Abstract

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A charge density wave (CDW) normally creates a gap at the Fermi level, inducing a metal-insulator transition. Here, the authors report that a CDW gap resides in the unoccupied states but induces a topological metal-metal transition at the Fermi level in monolayer VS2.