| 管长和管径对单壁碳纳米管电导的影响 |
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| 引用本文： | 唐娜斯,颜晓红,丁建文.管长和管径对单壁碳纳米管电导的影响[J].物理学报,2005,54(1):333-337. |
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| 作者姓名： | 唐娜斯 颜晓红 丁建文 |
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| 作者单位： | 湘潭大学材料与光电物理学院,湘潭 411105 |
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| 基金项目： | 湖南省中青年科技基金（批准号：00JJY2002）、湖南省教育厅重点项目和青年项目（批准 号：03A046和03B039）资助的课题. |
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| 摘 要： | 基于紧束缚模型，发展转移矩阵方法研究了单壁碳纳米管的导电性质.研究表明，由于卷曲效应，锯齿型(3k,0)管(k为整数)出现窄的电导沟，其大小与能隙一致.在费米能附近，电子输运不仅与管径和管长紧密相关，而且电子在不同能量下可能出现弹道的、扩散的和经典的三种不同输运特征.
关键词：
碳纳米管
转移矩阵
电导
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| 关 键 词： | 碳纳米管 转移矩阵 电导 |
| 收稿时间： | 2/5/2004 12:00:00 AM |
The effects of both length and tube-diameter on the conductance of single-walled carbon nanotubes |
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| Tang Na-Si,Yan Xiao-Hong and Ding Jian-Wen.The effects of both length and tube-diameter on the conductance of single-walled carbon nanotubes[J].Acta Physica Sinica,2005,54(1):333-337. |
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| Authors: | Tang Na-Si Yan Xiao-Hong and Ding Jian-Wen |
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| Abstract: | Based on the tight-binding model, we develop a transfer-matrix method to study the electronic conductance of single-walled carbon nanotubes. It is found that there exists a narrow conductance gap in metallic zigzag nanotubes corresponding to the curvature-induced energy gap. In addition, the conductance near the Fermi level depends on both the diameter and the length of the carbon nanotube. Moreover, ballistic, diffused or classical transport may be found in carbon nanotubes with variation of energy. |
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| Keywords: | carbon nanotube transfer-matrix method conductance |
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