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 |
|---|---|
| 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