UA tight-binding Hamiltonian is used to study the electronic properties of covalently bonded, crossed (5,5) metallic nanotubes with an increasing degree of disorder in the junction region. Ideal junctions with a few topological defects show Ohmic behavior. Upon increasing disorder, Ohmic conduction is suppressed in favor of hopping conductivity. Strongly disordered junctions as could be obtained after electron-beam irradiation of overlayed nanotubes, display weak localization and energy quantization, indicating the formation of a quantum dot contacted to metallic nanowires by tunnel barriers. © 2004 The American Physical Society.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 25 Mar 2004|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cleri, F., Keblinski, P., Jang, I., & Sinnott, S. S. (2004). Localization and quantization in covalently bonded carbon nanotube junctions. Physical Review B - Condensed Matter and Materials Physics, 69(12), -. https://doi.org/10.1103/PhysRevB.69.121412