Correlated insulator behaviour at half-filling in magic-angle graphene superlattices

@article{Cao2018CorrelatedIB,
  title={Correlated insulator behaviour at half-filling in magic-angle graphene superlattices},
  author={Yuan Cao and Valla Fatemi and Ahmet Demir and Shiang Fang and Spencer L. Tomarken and Jason Y Luo and Javier D Sanchez-Yamagishi and Kenji Watanabe and Takashi Taniguchi and Efthimios Kaxiras and Raymond C. Ashoori and Pablo Jarillo-Herrero},
  journal={Nature},
  year={2018},
  volume={556},
  pages={80-84}
}
A van der Waals heterostructure is a type of metamaterial that consists of vertically stacked two-dimensional building blocks held together by the van der Waals forces between the layers. This design means that the properties of van der Waals heterostructures can be engineered precisely, even more so than those of two-dimensional materials. One such property is the ‘twist’ angle between different layers in the heterostructure. This angle has a crucial role in the electronic properties of van… 

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