Conductance of disordered graphene sheets: A real space approach

Suman Chowdhury, Debnarayan Jana, Abhijit Mookerjee

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

(Graph Presented). In this work the conducting properties of graphene lattice (buckled as well as planar) having different concentrations of defects are studied with the help of real space block recursion method introduced by Haydock et al. Since the defects are completely random, reciprocal space based methods which need artificial periodicity are not applicable here. Different resonant states appear because of the presence of topological and local defects which are calculated within the framework of Green function. Except random voids, in all other density of states (DOS) spectra there are signatures of Breit-Wigner and Fano resonance at occupied and unoccupied regime respectively. Although Fano resonance states are not prominent for graphene with random voids, however Stone-Wales (SW) type defect can naturally introduce their resonance states. The appearance of localized states depends strongly on the concentration of defects.

Original languageEnglish
Pages (from-to)347-354
Number of pages8
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume74
DOIs
Publication statusPublished - Nov 2015
Externally publishedYes

Keywords

  • Extended disordered defects
  • Graphene
  • Real space recursion method
  • Transport property

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