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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    Résumé

    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.

    langue originaleAnglais
    Numéro d'article035428
    Nombre de pages8
    journalPhysical Review B - Condensed Matter and Materials Physics
    Volume91
    Numéro de publication3
    Les DOIs
    Etat de la publicationPublié - 20 janv. 2015

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