New Generation of Moiré Superlattices in Doubly Aligned hBN/Graphene/hBN Heterostructures

Lujun Wang, Simon Zihlmann, Ming Hao Liu, Péter Makk, Kenji Watanabe, Takashi Taniguchi, Andreas Baumgartner, Christian Schönenberger

研究成果: Article同行評審

78 引文 斯高帕斯(Scopus)

摘要

The specific rotational alignment of two-dimensional lattices results in a moiré superlattice with a larger period than the original lattices and allows one to engineer the electronic band structure of such materials. So far, transport signatures of such superlattices have been reported for graphene/hBN and graphene/graphene systems. Here we report moiré superlattices in fully hBN encapsulated graphene with both the top and the bottom hBN aligned to the graphene. In the graphene, two different moiré superlattices form with the top and the bottom hBN, respectively. The overlay of the two superlattices can result in a third superlattice with a period larger than the maximum period (14 nm) in the graphene/hBN system, which we explain in a simple model. This new type of band structure engineering allows one to artificially create an even wider spectrum of electronic properties in two-dimensional materials.

原文English
頁(從 - 到)2371-2376
頁數6
期刊Nano letters
19
發行號4
DOIs
出版狀態Published - 2019 4月 10

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 一般化學
  • 一般材料科學
  • 凝聚態物理學
  • 機械工業

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