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

Résultats de recherche: Contribution à un journal/une revueArticle

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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
étatPublié - 20 janv. 2015

Empreinte digitale

Carbon Nanotubes
Carbon nanotubes
Nitrogen
carbon nanotubes
Doping (additives)
disorders
Electron transport properties
nitrogen
Ballistics
configurations
ballistics
time dependence
diffusivity
Electronic structure
transport properties
electronic structure
symmetry

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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.",
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Transport regimes in nitrogen-doped carbon nanotubes: Perfect order, semi-random, and random disorder cases. / Khalfoun, Hafid; Lherbier, Aurélien; Lambin, Philippe; Henrard, Luc; Charlier, Jean-Christophe.

Dans: Physical Review B - Condensed Matter and Materials Physics, Vol 91, Numéro 3, 035428, 20.01.2015.

Résultats de recherche: Contribution à un journal/une revueArticle

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AU - Charlier, Jean-Christophe

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