Transport regimes in nitrogen-doped carbon nanotubes: Perfect order, semi-random, and random disorder cases

Hafid Khalfoun, Aurélien Lherbier, Philippe Lambin, Luc Henrard, Jean-Christophe Charlier

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Abstract

The electronic structure and the transport properties of nitrogen-doped carbon nanotubes are investigated using a tight-binding model and a real-space Kubo-Greenwood approach, respectively. The transport regimes of various axial and helical doping configurations, from perfectly periodic to fully random disordered cases, are examined through the time dependence of the diffusivity. By varying the degree of disorder, a rich set of transient regimes is predicted going from persisting quasiballistic to momentarily localized regimes. A spectacular long-time ballistic regime is also observed for a specific semi-random disorder doping configuration owing to symmetry effects.

Original languageEnglish
Article number035428
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number3
DOIs
Publication statusPublished - 20 Jan 2015

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