Quantum Interference Effects in Electronic Transport through Nanotube Contacts

Quantum interference has dramatic effects on electronic transport through nanotube contacts. In optimal configuration the intertube conductance can approach that of a perfect nanotube (\(4e^2/h\)). The maximum conductance increases rapidly with the contact length up to 10 nm, beyond which it exhibit...

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Bibliographic Details
Published in:arXiv.org 2003-02
Main Authors: Buia, Calin, Buldum, Alper, Lu, Jian Ping
Format: Article
Language:English
Subjects:
Broken symmetry
Circuits
Electromechanical devices
Electron transport
Electronic circuits
Interference
Nanotubes
Quantum interference effects
Resistance
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Summary:Quantum interference has dramatic effects on electronic transport through nanotube contacts. In optimal configuration the intertube conductance can approach that of a perfect nanotube (\(4e^2/h\)). The maximum conductance increases rapidly with the contact length up to 10 nm, beyond which it exhibits long wavelength oscillations. This is attributed to the resonant cavity-like interference phenomena in the contact region. For two concentric nanotubes symmetry breaking reduces the maximum intertube conductance from \(4e^2/h\) to \(2e^2/h\). The phenomena discussed here can serve as a foundation for building nanotube electronic circuits and high speed nanoscale electromechanical devices.
ISSN:2331-8422
DOI:10.48550/arxiv.0202253