Reconciling the electronic and geometric corrugations of the hexagonal boron nitride and graphene nanomeshes

William C. McKee, Vincent Meunier, Ye Xu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Monolayer hexagonal boron nitride on Rh(111) and graphene on Ru(0001) illustrate a trend of divergence between the density functional theory (DFT) calculated geometric corrugation, and scanning tunneling microscope (STM) measured apparent corrugation, of metal-supported 2D films that feature chemically distinct regions. Notably, the geometric and apparent corrugations differ by up to 2 Å for boron nitride/Rh(111), whereas both the DFT-simulated and the experimentally observed STM images agree in the apparent corrugation over a wide range of bias voltages. The disparity is due to unequal contributions of the low/high-lying atoms to the local density of states in the vicinity of the Fermi level. This phenomenon has important implications for the structural characterization of certain supported 2D films, which are being explored for novel electronic and material applications.

Original languageEnglish (US)
Pages (from-to)L16-L19
JournalSurface Science
Volume642
DOIs
StatePublished - Dec 1 2015

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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