| 梯子形石墨烯纳米条带输运性质的研究 |
| |
| 引用本文： | 蔡宇凯,陈将伟,杨恒新,陶志阔,王伟.梯子形石墨烯纳米条带输运性质的研究[J].南京邮电大学学报(自然科学版),2012,32(2):109-113. |
| |
| 作者姓名： | 蔡宇凯 陈将伟 杨恒新 陶志阔 王伟 |
| |
| 作者单位： | 南京邮电大学电子科学与工程学院,江苏南京,210046 |
| |
| 基金项目： | 国家自然科学基金(60806027);江苏省高校自然科学研究面上项目(10KJD510005,10KJD510006)资助项目 |
| |
| 摘 要： | 在紧束缚近似下,采用Green函数和Landauer-Büttiker公式计算了梯子型石墨烯纳米条带的电子输运性质。结果表明,随着阶梯数的增加,梯子型石墨烯纳米条带电导峰以0.0 eV为中心发生对称分裂,中心电导峰减小直至消失;随着阶梯间间隔变大,电导峰减小。通过数值计算,揭示了该新型石墨烯结构电子输运的物理机制,为基于石墨烯的新器件的设计和优化提供理论指导。
|
| 关 键 词： | 梯子型石墨烯 紧束缚模型 格林函数 电子输运性质 |
Electronic Transport Properties of Ladder-shaped Graphene Nanoribbon |
| |
| CAI Yu-kai
,
CHEN Jiang-wei
,
YANG Heng-xin
,
TAO Zhi-kuo
,
WANG Wei.Electronic Transport Properties of Ladder-shaped Graphene Nanoribbon[J].Journal of Nanjing University of Posts and Telecommunications,2012,32(2):109-113. |
| |
| Authors: | CAI Yu-kai CHEN Jiang-wei YANG Heng-xin TAO Zhi-kuo WANG Wei |
| |
| Affiliation: | College of Electronic Science & Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210046,China |
| |
| Abstract: | Electronic transport properties of various structures of ladder-shaped graphene nanoribbon have been calculated by using Green’s function function and Landauer-Büttiker formulation in tight-binding approximation.The simulating results show that the conductance peak of the graphene strctures splits in 0.0eV as the symmetrical center and decreases until they disappear,with increasing of the ladders.The peaks of conductance will be suppressed with increasing of ladder interval.Our comprehensive studies on the electronic transport of graphene structures can provide physical insight and guidance for further optimization and theoretical studies of new graphene devices. |
| |
| Keywords: | ladder-shaped graphene tight-banding model Green’s function electronic transport properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
