Graphene quantum dots embedded in a hexagonal BN sheet: identical influences of zigzag/armchair edges.

@article{Zhao2013GrapheneQD,
  title={Graphene quantum dots embedded in a hexagonal BN sheet: identical influences of zigzag/armchair edges.},
  author={Ruiqi Zhao and Jinying Wang and Mingmei Yang and Zhongfan Liu and Zhirong Liu},
  journal={Physical chemistry chemical physics : PCCP},
  year={2013},
  volume={15 3},
  pages={
          803-6
        }
}
Various graphene quantum dots (GQDs) embedded in a hexagonal BN sheet were studied theoretically using the tight binding model. The effective mass was analyzed as a function of the distance between neighboring GQDs. It was found that the effective mass increases exponentially as the distance increases, indicating that the confined states of GQDs are well conserved in these hybrid systems. Further studies revealed that a ubiquitous gap of 0.3-3 eV exists, the size of which is mainly governed by… 
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