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The effect of next nearest neighbor coupling on the optical spectra in bilayer graphene

Journal Article


Abstract


  • We investigate the dependence of the optical conductivity of bilayer graphene (BLG) on the

    intra and interlayer interactions using the most complete model to date. We show that the next

    nearest neighbor intralayer coupling introduces new features in the low energy spectrum

    significantly changing the universal conductance. Further, its interplay with interlayer

    couplings leads to an anisotropy in the conductance in the ultraviolet range. We propose that

    experimental measurement of the optical conductivity of intrinsic and doped BLG will provide

    a good benchmark for the relative importance of intra and interlayer couplings at different

    doping levels.

Authors


  •   Wright, A R. (external author)
  •   Liu, Feng T. (external author)
  •   Chao Zhang

Publication Date


  • 2009

Citation


  • Wright, A., Liu, F. T. & Zhang, C. (2009). The effect of next nearest neighbor coupling on the optical spectra in bilayer graphene. nanotechnology, 20 (40), 1-5.

Scopus Eid


  • 2-s2.0-70349687607

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5444

Number Of Pages


  • 4

Start Page


  • 1

End Page


  • 5

Volume


  • 20

Issue


  • 40

Abstract


  • We investigate the dependence of the optical conductivity of bilayer graphene (BLG) on the

    intra and interlayer interactions using the most complete model to date. We show that the next

    nearest neighbor intralayer coupling introduces new features in the low energy spectrum

    significantly changing the universal conductance. Further, its interplay with interlayer

    couplings leads to an anisotropy in the conductance in the ultraviolet range. We propose that

    experimental measurement of the optical conductivity of intrinsic and doped BLG will provide

    a good benchmark for the relative importance of intra and interlayer couplings at different

    doping levels.

Authors


  •   Wright, A R. (external author)
  •   Liu, Feng T. (external author)
  •   Chao Zhang

Publication Date


  • 2009

Citation


  • Wright, A., Liu, F. T. & Zhang, C. (2009). The effect of next nearest neighbor coupling on the optical spectra in bilayer graphene. nanotechnology, 20 (40), 1-5.

Scopus Eid


  • 2-s2.0-70349687607

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/5444

Number Of Pages


  • 4

Start Page


  • 1

End Page


  • 5

Volume


  • 20

Issue


  • 40