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Quantum transport in graphene p-n junctions with moire superlattice modulation.

ABSTRACT: We present simulations of quantum transport in graphene p-n junctions (pnJs) in which moiré superlattice potentials are incorporated to demonstrate the interplay between pnJs and moiré superlattice potentials. It is shown that the longitudinal and Hall resistivity maps can be strongly modulated by the pnJ profile, junction height, and moiré potentials. Device resistance measurements are subsequently performed on graphene/hexagonal- boron-nitride heterostructure samples with accurate alignment of crystallographic orientations to complement and support the simulation results.

SUBMITTER: Hu J

PROVIDER: S-EPMC6463535 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Quantum transport in graphene p-n junctions with moiré superlattice modulation.

Hu Jiuning J Rigosi Albert F AF Lee Ji U JU Lee Hsin-Yen HY Yang Yanfei Y Liu Chieh-I CI Elmquist Randolph E RE Newell David B DB

Physical review. B 20180101

We present simulations of quantum transport in graphene p-n junctions (pnJs) in which moiré superlattice potentials are incorporated to demonstrate the interplay between pnJs and moiré superlattice potentials. It is shown that the longitudinal and Hall resistivity maps can be strongly modulated by the pnJ profile, junction height, and moiré potentials. Device resistance measurements are subsequently performed on graphene/hexagonal- boron-nitride heterostructure sample ...[more]

PMID: 30997442

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