Electrical transport properties of mono-dispersed single-wall carbon nanotubes formed in channels of zeolite crystal

被引：32

作者：

Tang, ZK ^{[1
]}

Sun, HD ^{[1
]}

Wang, J ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China

来源：

PHYSICA B | 2000年 / 279卷 / 1-3期

关键词：

single-wall carbon nanotube; one-dimensional metal; hopping conductance;

D O I：

10.1016/S0921-4526(99)00734-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report the electric transport properties of mono-sized carbon nanotubes fabricated in the channels of AlPO4-5 zeolite crystals. From X-ray data, the carbon nanotubes are shown to have a diameter of similar to 5 A. Due to the large curvature, LDA calculations show the nanotubes to have a finite density-of-states at the Fermi level for all possible nanotubes consistent with the measured diameter. However. transport measurements show the temperature dependence to be non-metallic, This could be due to electron localization caused by imperfections and impurities in the nanotubes. The observed temperature dependence of zero-field conductance. In(sigma) similar to 1/root (T) over bar, supports the 1D hopping transport process. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：200 / 203

页数：4

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