Quantum transport properties of mono-bi-monolayer graphene junctions (MBMGJs) are investigated via first principle calculation. The simulation results show that the MBMGJs introduce more effective quantum transport channels in comparing with a full monolayer graphene nanoribbon channel and result in significantly increased on-state current. An overlapping-MBMGJ channel with one overlapping zigzag carbon chain shows a larger current even than a full bilayer graphene channel. The robustness of the effective quantum transport channel introduced by the overlapping-MBMGJ against the variation of the length of the bilayer region is also verified. (C) 2013 AIP Publishing LLC.
机构:
Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, EnglandUniv Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England
Geim, A. K.
;
Novoselov, K. S.
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Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, EnglandUniv Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England
机构:
Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, EnglandUniv Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England
Geim, A. K.
;
Novoselov, K. S.
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h-index: 0
机构:
Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, EnglandUniv Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England