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Encapsulated nanowires: Boosting electronic transport in carbon nanotubes

Andrij Vasylenko, Jamie Wynn, Paulo V. C. Medeiros, Andrew J. Morris, Jeremy Sloan, and David Quigley
Phys. Rev. B 95, 121408(R) – Published 27 March 2017
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Abstract

The electrical conductivity of metallic carbon nanotubes (CNTs) quickly saturates with respect to bias voltage due to scattering from a large population of optical phonons. The decay of these dominant scatterers in pristine CNTs is too slow to offset an increased generation rate at high voltage bias. We demonstrate from first principles that encapsulation of one-dimensional atomic chains within a single-walled CNT can enhance the decay of “hot” phonons by providing additional channels for thermalization. Pacification of the phonon population growth reduces the electrical resistivity of metallic CNTs by 51% for an example system with encapsulated beryllium.

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  • Received 7 November 2016

DOI:https://doi.org/10.1103/PhysRevB.95.121408

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Andrij Vasylenko1,2, Jamie Wynn3, Paulo V. C. Medeiros3, Andrew J. Morris1,3, Jeremy Sloan1, and David Quigley1

  • 1Department of Physics, University of Warwick, Warwick CV4 7AL, United Kingdom
  • 2Institute for Condensed Matter Physics, National Academy of Science of Ukraine, 79011 Lviv, Ukraine
  • 3Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom

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Issue

Vol. 95, Iss. 12 — 15 March 2017

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