Localization and quantization in covalently bonded carbon nanotube junctions

Fabrizio Cleri, Pawel Keblinski, Inkook Jang, Susan S. Sinnott

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

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.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number12
DOIs
StatePublished - Mar 25 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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