Positional dependence of energy gap on line defect in armchair graphene nanoribbons: Two-terminal transport and related issues
Positional dependence of energy gap on line defect in armchair graphene nanoribbons: Two-terminal transport and related issues
复制标题
DOI：
10.1063/1.4813614
复制
发表时间：
2013-03
影响因子：
3.2
通讯作者：
Paramita Dutta;S. Maiti;S. Karmakar
中科院分区：
文献类型：
--
作者：
Paramita Dutta;S. Maiti;S. Karmakar
在一个简单的非相互作用的紧束缚框架下，分析了扶手椅石墨烯纳米带在线缺陷存在时的能带特性。在金属纳米带中，能隙可能出现在带谱中，也可能不出现，这取决于缺陷线的位置，而在半导体带材中，带隙是定制的，从而产生了石墨烯纳米带在纳米电子器件中的潜在应用。在更一般的模型下，我们还用格林函数方法研究了双端电子输运。
The characteristics of energy band spectrum of armchair graphene nanoribbons in the presence of line defect are analyzed within a simple non-interacting tight-binding framework. In metallic nanoribbons, an energy gap may or may not appear in the band spectrum depending on the location of the defect line, while in semiconducting ribbons, the gaps are customized, yielding the potential applicabilities of graphene nanoribbons in nanoscale electronic devices. With a more general model, we also investigate two-terminal electron transport using Green's function formalism.