Inducing injection barrier by covalent functionalization of multiwall carbon nanotubes acting as Moiré crystals

Covalent functionalization of multiwall carbon nanotubes is a direct method to suppress the conduction of the outermost shell, subject to interactions with the environment. The rehybridized sp3 external shell of the functionalized multiwall carbon nanotubes becomes naturally a hybrid injection barri...

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Bibliographic Details
Published in:Applied physics letters 2016-10, Vol.109 (14)
Main Authors: Bonnet, Roméo, Barraud, Clément, Martin, Pascal, Della Rocca, Maria Luisa, Lafarge, Philippe
Format: Article
Language:English
Subjects:
Applied physics
Carbon
Charge transport
Chemical Sciences
Contact resistance
Multi wall carbon nanotubes
Nanotubes
Quantum transport
Resistance
Superlattices
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Summary:Covalent functionalization of multiwall carbon nanotubes is a direct method to suppress the conduction of the outermost shell, subject to interactions with the environment. The rehybridized sp3 external shell of the functionalized multiwall carbon nanotubes becomes naturally a hybrid injection barrier allowing the control of the contact resistances and the study of quantum transport in the more protected inner shells. Charge transport measurements performed on isolated multiwall carbon nanotubes of large diameter show an increase of the contact resistance and stabilization in the MΩ range. Electronic quantum properties of the inner shells are highlighted by the observation of superlattice structures in the conductance, recently attributed to the formation of a one-dimensional Moiré pattern.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4964129