Two coupled graphene layers. Their electronic bands depend on relative stacking and external electrostatic conditions, rather than on layer count alone.
Bilayer graphene with a relative rotation between the layers. Hybridization of displaced Dirac cones creates angle-dependent bands and optical resonances.
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Bilayer graphene consists of two layers of graphene stacked on top of each other. Graphene itself is a single layer of carbon atoms arranged in a two-dimensional honeycomb lattice structure, known for its remarkable electrical, thermal, and mechanical properties. When two graphene layers are stacked, they can interact in various ways depending on their orientation and the way they are coupled. The properties of bilayer graphene are influenced by the interaction between the two layers.