Electronic structure of a realistic model of amorphous graphene

V. Kapko, D. A. Drabold, Michael Thorpe

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

In this note, we calculate the electronic properties of a realistic atomistic model of amorphous graphene. The model contains odd-membered rings, particularly five and seven membered rings and no coordination defects.Weshow that odd-membered rings increase the electronic density of states at the Fermi level relative to crystalline graphene; a honeycomb lattice with semimetallic character. Some graphene samples contain amorphous regions, which even at small concentrations, may strongly affect many of the exotic properties of crystalline graphene, which arise because of the linear dispersion and semi-metallic character of perfectly crystalline graphene. Estimates are given for the density of states at the Fermi level using a tight-binding model for the π states.

Original languageEnglish (US)
Pages (from-to)1197-1200
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume247
Issue number5
DOIs
StatePublished - May 2010

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Graphene
Electronic structure
graphene
electronic structure
Crystalline materials
Fermi level
rings
Electronic density of states
electronics
Crystal lattices
Electronic properties
Defects
defects
estimates

Keywords

  • Amorphous graphene
  • Continuous random network
  • Density of states

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Electronic structure of a realistic model of amorphous graphene. / Kapko, V.; Drabold, D. A.; Thorpe, Michael.

In: Physica Status Solidi (B) Basic Research, Vol. 247, No. 5, 05.2010, p. 1197-1200.

Research output: Contribution to journalArticle

Kapko, V. ; Drabold, D. A. ; Thorpe, Michael. / Electronic structure of a realistic model of amorphous graphene. In: Physica Status Solidi (B) Basic Research. 2010 ; Vol. 247, No. 5. pp. 1197-1200.
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