Conductivity of graphene on boron nitride substrates

Details Conductivity of graphene on boron nitride substrates Conductivity of graphene on boron nitride substrates

2010-12-31

arxiv.org/abs/1101.0299v1

Phys. Rev. B 83, 121405(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevB.83.121405

We calculate theoretically the disorder-limited conductivity of monolayer and bilayer graphene on hexagonal boron nitride (h-BN) substrates, comparing our theoretical results with the recent experimental results. The comparison leads to a direct quantitative estimate of the underlying disorder strength for both short-range and long-range disorder in the graphene on h-BN system. We find that the good interface quality between graphene and h-BN leads to strongly suppressed charged impurity scattering compared with the corresponding SiO$_2$ substrate case, thus producing very high mobility for the graphene on h-BN system.

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