Separation-dependent electronic transparency of monolayer graphene membranes on III-V semiconductor substrates

Kevin T. He, Justin C. Koepke, Salvador Barraza-Lopez, Joseph W Lyding

Research output: Contribution to journal › Article

Abstract

Ultrahigh vacuum scanning tunneling microscopy and first-principles calculations have been carried out to study monolayer graphene nanomembranes deposited in situ onto UHV-cleaved GaAs(110) and InAs(110) surfaces. A bias-dependent semitransparency effect is observed in which the substrate atomic structure is clearly visible through the graphene monolayer. Statistical data analysis and density functional theory calculations suggest that this semitransparency phenomenon is due to the scanning tunneling microscope tip pushing the graphene membrane away from its equilibrium location and closer to the substrate surface, causing their electronic states to intermix.

Original languageEnglish (US)
Pages (from-to)3446-3452
Number of pages7
JournalNano letters
Volume10
Issue number9
DOIs
StatePublished - Sep 8 2010

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Transparency
Graphene
Monolayers
graphene
membranes
Membranes
Substrates
electronics
pushing
Electronic states
Ultrahigh vacuum
Scanning tunneling microscopy
atomic structure
ultrahigh vacuum
Density functional theory
scanning tunneling microscopy
Microscopes
microscopes
density functional theory

Keywords

  • GaAs
  • Graphene
  • InAs
  • STM
  • density functional theory

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Separation-dependent electronic transparency of monolayer graphene membranes on III-V semiconductor substrates. / He, Kevin T.; Koepke, Justin C.; Barraza-Lopez, Salvador; Lyding, Joseph W.

In: Nano letters, Vol. 10, No. 9, 08.09.2010, p. 3446-3452.

Research output: Contribution to journal › Article

He, KT, Koepke, JC, Barraza-Lopez, S & Lyding, JW 2010, 'Separation-dependent electronic transparency of monolayer graphene membranes on III-V semiconductor substrates', Nano letters, vol. 10, no. 9, pp. 3446-3452. https://doi.org/10.1021/nl101527e
He KT, Koepke JC, Barraza-Lopez S, Lyding JW. Separation-dependent electronic transparency of monolayer graphene membranes on III-V semiconductor substrates. Nano letters. 2010 Sep 8;10(9):3446-3452. https://doi.org/10.1021/nl101527e
He, Kevin T. ; Koepke, Justin C. ; Barraza-Lopez, Salvador ; Lyding, Joseph W. / Separation-dependent electronic transparency of monolayer graphene membranes on III-V semiconductor substrates. In: Nano letters. 2010 ; Vol. 10, No. 9. pp. 3446-3452.
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