Ab initio investigation of the electronic properties of graphene on InAs(111)A


Yelgel C. , Srivastava G. P. , MIWA R. H.

JOURNAL OF PHYSICS-CONDENSED MATTER, vol.24, no.48, 2012 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 48
  • Publication Date: 2012
  • Doi Number: 10.1088/0953-8984/24/48/485004
  • Title of Journal : JOURNAL OF PHYSICS-CONDENSED MATTER

Abstract

The equilibrium geometry and electronic structure of graphene on the most stable In-vacancy InAs(111) A surface has been investigated using the density functional and pseudopotential theories. The equilibrium distance between graphene and InAs(111) is found to be 3.05 angstrom with adsorption energy approximately 38 meV/C atom. According to our electronic band calculation, there is a re-distribution of the charge density around the graphene sheet, which leads to the development of a dipole moment along the surface normal. Scanning tunnelling microscopy image simulations suggest that the InAs(111) substrate is visible through the graphene layer.