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arXiv · 2201.06693

Evidence for Phonon-Assisted Intertube Electronic Transport in an Armchair Carbon Nanotube Film

Davoud Adinehloo·Weilu Gao·Ali Mojibpour·Junichiro Kono·Vasili Perebeinos
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Abstract

The electrical conductivity of a macroscopic assembly of nanomaterials is determined through a complex interplay of electronic transport within and between constituent nano-objects. Phonons play dual roles in this situation: their increased populations tend to reduce the conductivity via electron scattering while they can boost the conductivity by assisting electrons to propagate through the potential-energy landscape. Here, we identify a phonon-assisted coherent electron transport process between neighboring nanotubes in temperature-dependent conductivity measurements on a macroscopic film of armchair single-wall carbon nanotubes. Through atomistic modeling of electronic states and calculations of both electronic and phonon-assisted junction conductances, we conclude that phonon-assisted conductance is the dominant mechanism for the observed high-temperature transport. The unambiguous manifestation of coherent intertube dynamics proves a single-chirality armchair nanotube film to be a unique macroscopic solid-state ensemble of nano-objects promising for the development of room-temperature coherent electronic devices.

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Davoud Adinehloo, Weilu Gao, Ali Mojibpour, Junichiro Kono, Vasili Perebeinos. 2022-01-18. Evidence for Phonon-Assisted Intertube Electronic Transport in an Armchair Carbon Nanotube Film. https://doi.org/10.1103/physrevlett.130.176303

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