Role of remote interfacial phonons in the resistivity of graphene
Abstract
The temperature ( T) dependence of electrical resistivity in graphene has been experimentally investigated between 10 and 400 K for samples prepared on various substrates; HfO2, SiO2 and h-BN. The resistivity of graphene shows a linear T-dependence at low T and becomes superlinear above a substrate-dependent transition temperature. The results are explained by remote interfacial phonon scattering by surface optical phonons at the substrates. The use of an appropriate substrate can lead to a significant improvement in the charge transport of graphene.
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