Abstract
The non-ohmic current-voltage (I-V) characteristics of the single-wall carbon nanotube network were investigated at low temperatures. The temperature dependence of resistivity at low current (I<10 μA) shows non-metallic negative dρ/dT from T = 1.4-300 K. Below T<15 K, gradual decreases of resistivity are observed as the applied currents increase, showing significant non-ohmic behavior at high electric field. The I-V curves in the non-ohmic regime can be fitted well by the fluctuation-induced tunneling model, indicating the importance of inter-tubular contacts or inherent energy barriers inside the tubes.
Original language | English |
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Pages (from-to) | 123-126 |
Number of pages | 4 |
Journal | Synthetic Metals |
Volume | 117 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2001 Feb 15 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry