Electrical transport in small bundles of single-walled carbon nanotubes: Intertube interaction and effects of tube deformation
Electrical transport in small bundles of single-walled carbon nanotubes: Intertube interaction and effects of tube deformation
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DOI：
10.1063/1.3402768
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发表时间：
2010-04-26
影响因子：
4
通讯作者：
Zuo, Jian-Min
中科院分区：
文献类型：
--
作者：
Kim, Taekyung;Kim, Gunn;Zuo, Jian-Min
我们报道了场效应晶体管（fet）中小碳纳米管束的电子输运和结构表征的结合研究。束的原子结构由电子衍射确定，利用在场效应管中建立的观察窗口。单壁纳米管束的电传输取决于单个管的结构、管间相互作用引起的变形以及相对于电场的方向。从头算模拟表明，管束中的管形变形引起金属管的带隙开口。这些结果表明了管间相互作用在碳纳米管电输运中的重要性。
We report a combined electronic transport and structural characterization study of small carbon nanotube bundles in field-effect transistors (FETs). The atomic structures of the bundles are determined by electron diffraction using an observation window built in the FET. The electrical transport of single-walled nanotube bundles depends on the structure of individual tubes, deformation due to intertube interaction, and the orientation with respect to the electric field. Ab initio simulations show that tube deformation in the bundle induces a band gap opening in a metallic tube. These results show the importance of intertube interaction in electrical transport of bundled carbon nanotubes.