| 含有五边形—七边形缺陷的单壁纳米碳管的输运性质研究 |
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| 引用本文： | 曾晖,胡慧芳,韦建卫,谢芳,彭平.含有五边形—七边形缺陷的单壁纳米碳管的输运性质研究[J].物理学报,2006,55(9):4822-4827. |
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| 作者姓名： | 曾晖 胡慧芳 韦建卫 谢芳 彭平 |
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| 作者单位： | (1)湖南大学材料科学与工程学院，长沙 410082; (2)湖南大学应用物理系，长沙 410082 |
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| 基金项目： | 国家自然科学基金;湖南省自然科学基金 |
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| 摘 要： | 运用第一性原理的密度泛函理论结合非平衡格林函数研究了含有五边形—七边形拓扑缺陷的纳米碳管异质结的输运性质.结果发现：拓扑缺陷对碳管的输运性质有很大影响；另外，不同类型的碳管形成的异质结的输运性质也有明显的差异.
关键词：
纳米碳管
输运性质
异质结
透射系数
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| 关 键 词： | 纳米碳管 输运性质 异质结 透射系数 |
| 文章编号： | 1000-3290/2006/55(09)/4822-07 |
| 收稿时间： | 2/8/2006 12:00:00 AM |
| 修稿时间： | 2006-02-082006-03-28 |
Electronic transport properties of single-wall carbon nanotube with pentagon-heptagon-pair defect |
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| Zeng Hui,Hu Hui-Fang,Wei Jian-Wei,Xie Fang,Peng Ping.Electronic transport properties of single-wall carbon nanotube with pentagon-heptagon-pair defect[J].Acta Physica Sinica,2006,55(9):4822-4827. |
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| Authors: | Zeng Hui Hu Hui-Fang Wei Jian-Wei Xie Fang Peng Ping |
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| Institution: | 1 Department of Applied Physics, Hunan University, Changsha 410082, China;2 College of Materials Science and Engineering, Hunan University, Changsha 410082, China |
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| Abstract: | Using the density-functional theory in combination with nonequilibrium Green's function technique, we studied the densities of states and transport properties of the(7，0)—(8，0)and(8，0)—(9，0)single-wall carbon-nanotube heterojunctions containing one pentagon-heptagon-pair (5/7) topological defect. The result suggests that the effect of pentagon-heptagon-pairs (5/7) topological defects on carbon nanotubes is remarkable.In addition, the heterojunctions constituted by different types of carbon nanotubes also have different characteristics. |
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| Keywords: | carbon nanotube transport properties heterojuction transmission coefficient |
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