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arXiv · 1106.4995

Stacking-order dependent transport properties of trilayer graphene

S. H. Jhang·M. F. Craciun·S. Schmidmeier·S. Tokumitsu·S. Russo·M. Yamamoto·Y. Skourski·J. Wosnitza·S. Tarucha·J. Eroms·C. Strunk
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Abstract

We report markedly different transport properties of ABA- and ABC-stacked trilayer graphenes. Our experiments in double-gated trilayer devices provide evidence that a perpendicular electric field opens an energy gap in the ABC trilayer, while it causes the increase of a band overlap in the ABA trilayer. In a perpendicular magnetic field, the ABA trilayer develops quantum Hall plateaus at filling factors of ν= 2, 4, 6... with a step of Δν= 2, whereas the inversion symmetric ABC trilayer exhibits plateaus at ν= 6 and 10 with 4-fold spin and valley degeneracy.

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S. H. Jhang, M. F. Craciun, S. Schmidmeier, S. Tokumitsu, S. Russo, M. Yamamoto, Y. Skourski, J. Wosnitza, S. Tarucha, J. Eroms, C. Strunk. 2011-06-24. Stacking-order dependent transport properties of trilayer graphene. https://doi.org/10.1103/physrevb.84.161408

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