Effect of structural defects on the thermal conductivity of graphene: From point to line defects to haeckelites

Zacharias G. Fthenakis, Zhen Zhu, and David Tománek
Phys. Rev. B 89, 125421 – Published 17 March 2014

Abstract

We use nonequilibrium molecular-dynamics simulations to study the effect of structural defects on the thermal conductivity λ of graphene. Focusing on 5-7 and 5-8 defects in the graphene honeycomb lattice, we find that λ depends sensitively on whether the defects are isolated, form lines, or form extended arrangements in haeckelites. Our results indicate that the presence of defects makes λ anisotropic and, depending on the temperature, quenches its value by one to two orders of magnitude with respect to graphene, mainly by reducing the phonon mean free path.

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  • Received 11 December 2013
  • Revised 21 February 2014

DOI:https://doi.org/10.1103/PhysRevB.89.125421

©2014 American Physical Society

Authors & Affiliations

Zacharias G. Fthenakis, Zhen Zhu, and David Tománek*

  • Physics and Astronomy Department, Michigan State University, East Lansing, Michigan 48824, USA

  • *tomanek@pa.msu.edu

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Vol. 89, Iss. 12 — 15 March 2014

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