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arXiv · 0805.1830

Temperature dependent transport in suspended graphene

K. I. Bolotin·K. J. Sikes·J. Hone·H. L. Stormer·P. Kim
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Abstract

The resistivity of ultra-clean suspended graphene is strongly temperature dependent for 5K 0.5*10^11 cm^-2, the resistivity increases with increasing T and is linear above 50K, suggesting carrier scattering from acoustic phonons. At T=240K the mobility is ~120,000 cm^2/Vs, higher than in any known semiconductor. At the charge neutral point we observe a non-universal conductivity that decreases with decreasing T, consistent with a density inhomogeneity <10^8 cm^-2.

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K. I. Bolotin, K. J. Sikes, J. Hone, H. L. Stormer, P. Kim. 2008-05-13. Temperature dependent transport in suspended graphene. https://doi.org/10.1103/physrevlett.101.096802

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