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arXiv · 1303.2390

Electronic Thermal Conductivity Measurements in Intrinsic Graphene

S. Yiğen·V. Tayari·J. O. Island·J. M. Porter·A. R. Champagne
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Abstract

The electronic thermal conductivity of graphene and 2D Dirac materials is of fundamental interest and can play an important role in the performance of nano-scale devices. We report the electronic thermal conductivity, $K_{e}$, in suspended graphene in the nearly intrinsic regime over a temperature range of 20 to 300 K. We present a method to extract $K_{e}$ using two-point DC electron transport at low bias voltages, where the electron and lattice temperatures are decoupled. We find $K_e$ 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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S. Yiğen, V. Tayari, J. O. Island, J. M. Porter, A. R. Champagne. 2013-03-10. Electronic Thermal Conductivity Measurements in Intrinsic Graphene. https://doi.org/10.1103/physrevb.87.241411

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