Quantum Hall conductance of two-terminal graphene devices

Details Quantum Hall conductance of two-terminal graphene devices Quantum Hall conductance of two-terminal graphene devices

2008-10-20

arxiv.org/abs/0810.3397v1

Phys. Rev. B 80, 045408 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.80.045408

Measurement and theory of the two-terminal conductance of monolayer and bilayer graphene in the quantum Hall regime are compared. We examine features of conductance as a function of gate voltage that allow monolayer, bilayer, and gapped samples to be distinguished, including N-shaped distortions of quantum Hall plateaus and conductance peaks and dips at the charge neutrality point. Generally good agreement is found between measurement and theory. Possible origins of discrepancies are discussed.

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