石墨烯纳米条带的电子输运性质研究(英文)  

Study of Electronic Transport Characteristics of Graphene-based Nanoribbons

作　　者：闫帅军[1] 肖广然[1] 陈将伟[1] 蔡宇凯[1] 王伟[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,南京210003

出　　处：《固体电子学研究与进展》2013年第1期11-16,共6页Research & Progress of SSE

基　　金：国家自然科学基金资助项目(60806027);江苏省高校自然科学基金资助项目(10KJD510005,10KJD510006)

摘　　要：采用紧束缚近似模型,运用Green函数和Landauer-Büttiker公式计算了并联型Armchair型边界的石墨烯纳米条带的电子输运性质。结果表明,随着并联纳米条带数量的增加,石墨烯纳米条带电导峰(电导谷)将有相应数量的增加;条带之间的间距增宽,中心区电导谷的宽度将减小。通过数值计算,揭示该新型石墨烯结构电子输运的物理机制,为基于石墨烯的新型器件的设计和优化提供理论指导,并对石墨烯纳米条带在未来集成电路设计中的应用提供理论参考。The electronic transport properties of the various graphene structures with parallel armchair graphene nanoribbons （AGNR） have been calculated by using the Green function and the Landauer-Bi^ttiker Formula in tight-binding approximation model. The results show that, the more parallel nanoribbons there are, the more peaks（valleys） will appear in the calculated electri- cal conductivity. When the spacing between the bands is wider, the valley in the center of electri- cal conductivity will be narrower. Our calculation reveals the electron transport mechanism in the proposed structure, provides a preliminary theoretical basis in designing and optimizing grapheme devices, and can be a theoretical reference for the application of graphene nanoribbons in the fu- ture IC circuit layout.

关 键 词：并联型 石墨烯 紧束缚近似 格林函数 输运性质 

分 类 号：TN386[电子电信—物理电子学]