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Moire-Potential-Induced Band Structure Engineering in Graphene and Silicene

Journal Article


Abstract


  • A moiré pattern results from the projection of one periodic pattern to another with relative lattice constant or misalignment and provides great periodic potential to modify the electronic properties of pristine materials. In this Review, recent research on the effect of the moiré superlattice on the electronic structures of graphene and silicene, both of which possess a honeycomb lattice, is focused on. The moiré periodic potential is introduced by the interlayer interaction to realize abundant phenomena, including new generation of Dirac cones, emergence of Van Hove singularities (vHs) at the cross point of two sets of Dirac cones, Mott-like insulating behavior at half-filling state, unconventional superconductivity, and electronic Kagome lattice and flat band with nontrivial edge state. The role of interlayer coupling strength, which is determined by twist angle and buckling degree, in these exotic properties is discussed in terms of both the theoretical prediction and experimental measurement, and finally, the challenges and outlook for this field are discussed.

UOW Authors


  •   Zhao, Mengting (external author)
  •   Zhuang, Jincheng (external author)
  •   Cheng, Qunfeng (external author)
  •   Hao, Weichang (external author)
  •   Du, Yi

Publication Date


  • 2019

Published In


Citation


  • Zhao, M., Zhuang, J., Cheng, Q., Hao, W. & Du, Y. (2019). Moire-Potential-Induced Band Structure Engineering in Graphene and Silicene. Small, Online First 1903769 -1-1903769 -11.

Scopus Eid


  • 2-s2.0-85073926800

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3921

Start Page


  • 1903769 -1

End Page


  • 1903769 -11

Volume


  • Online First

Place Of Publication


  • Germany

Abstract


  • A moiré pattern results from the projection of one periodic pattern to another with relative lattice constant or misalignment and provides great periodic potential to modify the electronic properties of pristine materials. In this Review, recent research on the effect of the moiré superlattice on the electronic structures of graphene and silicene, both of which possess a honeycomb lattice, is focused on. The moiré periodic potential is introduced by the interlayer interaction to realize abundant phenomena, including new generation of Dirac cones, emergence of Van Hove singularities (vHs) at the cross point of two sets of Dirac cones, Mott-like insulating behavior at half-filling state, unconventional superconductivity, and electronic Kagome lattice and flat band with nontrivial edge state. The role of interlayer coupling strength, which is determined by twist angle and buckling degree, in these exotic properties is discussed in terms of both the theoretical prediction and experimental measurement, and finally, the challenges and outlook for this field are discussed.

UOW Authors


  •   Zhao, Mengting (external author)
  •   Zhuang, Jincheng (external author)
  •   Cheng, Qunfeng (external author)
  •   Hao, Weichang (external author)
  •   Du, Yi

Publication Date


  • 2019

Published In


Citation


  • Zhao, M., Zhuang, J., Cheng, Q., Hao, W. & Du, Y. (2019). Moire-Potential-Induced Band Structure Engineering in Graphene and Silicene. Small, Online First 1903769 -1-1903769 -11.

Scopus Eid


  • 2-s2.0-85073926800

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/3921

Start Page


  • 1903769 -1

End Page


  • 1903769 -11

Volume


  • Online First

Place Of Publication


  • Germany