Temperature dependent transport in suspended graphene

Details Temperature dependent transport in suspended graphene Temperature dependent transport in suspended graphene

2008-05-13

arxiv.org/abs/0805.1830v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevLett.101.096802

The resistivity of ultra-clean suspended graphene is strongly temperature dependent for 5K0.5*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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