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Electronic thermal conductivity measurements in intrinsic graphene

S. Yiğen, V. Tayari, J. O. Island, J. M. Porter, and A. R. Champagne
Phys. Rev. B 87, 241411(R) – Published 27 June 2013
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Abstract

The electronic thermal conductivity of graphene and two-dimensional Dirac materials is of fundamental interest and can play an important role in the performance of nanoscale devices. We report the electronic thermal conductivity Ke in suspended graphene in the nearly intrinsic regime over a temperature range of 20–300 K. We present a method to extract Ke using two-point dc electron transport at low bias voltages, where the electron and lattice temperatures are decoupled. We find Ke ranging from 0.5 to 11 W/m K over the studied temperature range. The data are consistent with a model in which heat is carried by quasiparticles with the same mean free path and velocity as graphene's charge carriers.

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  • Received 26 February 2013

DOI:https://doi.org/10.1103/PhysRevB.87.241411

©2013 American Physical Society

Authors & Affiliations

S. Yiğen, V. Tayari, J. O. Island, J. M. Porter, and A. R. Champagne*

  • Department of Physics, Concordia University, Montréal, Québec, Canada H4B 1R6

  • *a.champagne@concordia.ca

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Issue

Vol. 87, Iss. 24 — 15 June 2013

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