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Quantum Interference Effects in Electronic Transport through Nanotube Contacts

Calin Buia·Alper Buldum·Jian Ping Lu
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Abstract

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.

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Calin Buia, Alper Buldum, Jian Ping Lu. 2003-02-05. Quantum Interference Effects in Electronic Transport through Nanotube Contacts. https://doi.org/10.1103/physrevb.67.113409

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