Kun Shan University Institutional Repository:Item 987654321/12404
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    题名: Conductance of bilayer graphene nanoribbons with different widths
    作者: T.S. Li(李道聖)
    Y.C. Huang
    M.F. Lin
    S.C. Chang
    贡献者: 電機工程系
    关键词: transport properties
    electronic properties
    graphene nanoribbon
    日期: 2010-12-13
    ISSN: 1478–6435
    1478–6443
    上传时间: 2010-12-15 17:02:09 (UTC+8)
    摘要: The electronic and transport properties of bilayer graphene nanoribbons with different width are investigated theoretically by using the tight-binding model. The energy dispersion relations are found to exhibit significant dependence on the interlayer interactions and the geometry of the bilayer
    graphene nanoribbons. The energy gaps are oscillatory with the upper ribbon displacement. For all four types of bilayer graphene nanoribbons, the bandgaps touch the zero value and exhibit semiconductor–metal
    transitions. Variations in the electronic structures with the upper ribbon displacement will be reflected in the electrical and thermal conductance.
    The chemical-potential-dependent electrical and thermal conductances exhibit a stepwise increase and spike behavior. These conductances can be tuned by varying the upper ribbon displacement. The peak and trench structures of the conductance will be stretched out as the temperature rises.
    In addition, quantum conductance behavior in bilayer graphene nanoribbons can be observed experimentally at temperature below 10 K.
    關聯: Philosophical Magazine Vol. 90, No. 23, 14 August 2010, 3177–3187
    显示于类别:[電機工程系所] 期刊論文

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