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Universal geometric classification of armchair honeycomb nanoribbons by their properties in a staggered sublattice potential

Journal Article


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Abstract


  • We demonstrate the topological band-gap dependence of armchair honeycomb nanoribbons in a

    staggered sublattice potential. A scaling law is presented to quantify the band gap variation with

    potential strength. All armchair nanoribbons are described by one of three distinct classes

    depending on their width, consistent with previous classifications, namely, the well known

    massless Dirac condition, potentially gapless, and gapless-superlattice. The ability to tune and, in

    all cases close, the band-gap via external probes makes our classification particularly relevant

    experimentally. We propose several systems in which these results should shed considerable light,

    which have all already been experimentally realized.

Authors


  •   O'Brien, T E. (external author)
  •   Chao Zhang
  •   Wright, A R. (external author)

Publication Date


  • 2013

Citation


  • O''Brien, T. E., Zhang, C. & Wright, A. R. (2013). Universal geometric classification of armchair honeycomb nanoribbons by their properties in a staggered sublattice potential. Applied Physics Letters, 103 (17), 171608-1-171608-4.

Scopus Eid


  • 2-s2.0-84887122709

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2673&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1664

Start Page


  • 171608-1

End Page


  • 171608-4

Volume


  • 103

Issue


  • 17

Abstract


  • We demonstrate the topological band-gap dependence of armchair honeycomb nanoribbons in a

    staggered sublattice potential. A scaling law is presented to quantify the band gap variation with

    potential strength. All armchair nanoribbons are described by one of three distinct classes

    depending on their width, consistent with previous classifications, namely, the well known

    massless Dirac condition, potentially gapless, and gapless-superlattice. The ability to tune and, in

    all cases close, the band-gap via external probes makes our classification particularly relevant

    experimentally. We propose several systems in which these results should shed considerable light,

    which have all already been experimentally realized.

Authors


  •   O'Brien, T E. (external author)
  •   Chao Zhang
  •   Wright, A R. (external author)

Publication Date


  • 2013

Citation


  • O''Brien, T. E., Zhang, C. & Wright, A. R. (2013). Universal geometric classification of armchair honeycomb nanoribbons by their properties in a staggered sublattice potential. Applied Physics Letters, 103 (17), 171608-1-171608-4.

Scopus Eid


  • 2-s2.0-84887122709

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2673&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1664

Start Page


  • 171608-1

End Page


  • 171608-4

Volume


  • 103

Issue


  • 17