Electroconductance in single-wall carbon nanotubes

被引：6
|
作者：
Jaiswal, Manu [1 ]
Sangeeth, C. S. Suchand [1 ]
Menon, Reghu [1 ]
机构：
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
来源：
APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 03期
关键词：
carbon nanotubes; galvanomagnetic effects; hopping conduction; thin films; FIELD;
D O I：
10.1063/1.3186082
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A comparative study of the electric-field induced hopping transport probes the effective dimensionality (D) in bulk and ultrathin films of single-wall carbon nanotubes (SWNTs). The values of the scaling function exponents for the electroconductance are found to be consistent with that in three-dimensional and two-dimensional systems. The significant difference in threshold voltage in these two types of SWNTs is a consequence of the variation in the number of energetically favorable sites available for charge carriers to hop by using the energy from the field. Furthermore, a modification to the magnetotransport is observed under high electric-fields.
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页数：3
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