Special Seminar: Jia (Leo) Li, Columbia; “Correlated states in graphene double-layer in the …

An example of such meta-material is the double-layer graphene heterostructure, two vertically aligned graphene separated by a thin layer of hexagonal boron nitride (hBN). In the quantum Hall effect regime, tuning both graphene layers to half filling of the lowest Landau level induces interlayer excitonic …

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