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Graphene

Trilayers unravelled

The linear and hyperbolic electronic bands of single- and bilayer graphene give rise to quantum Hall effects that are different from those seen in previously studied 2D systems. The electronic structure of trilayer graphene includes both types of band, giving rise to even richer behaviour.

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Figure 1: Graphene systems owe their rich variety of quantum Hall effects to the similarity of conduction and valence bands (electron–hole symmetry), and a band structure that is delicately altered by interlayer interactions.

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Correspondence to Marcus Freitag.

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Freitag, M. Trilayers unravelled. Nature Phys 7, 596–597 (2011). https://doi.org/10.1038/nphys2032

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