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Paper   IPM / Nano-Sciences / 13278
School of Nano Science
  Title:   Visualizing the influence of point defects on the electronic band structure of graphene
  Author(s):  Mani Farjam
  Status:   Published
  Journal: J. Physics: Condens. Matter
  No.:  15
  Vol.:  26
  Year:  2014
  Pages:   155502(8pp)
  Publisher(s):   IOP Publishing Ltd
  Supported by:  IPM
The supercell approach enables us to treat the electronic structure of defective crystals,but the calculated energy bands are too complicated to understand or compare with angle-resolved photo emission spectra because of inevitable zone folding. We discuss how to visualize supercell band structures more effectively by incorporating unfolded spectral weights and orbital decompositions into them. We then apply these ideas to gain a better understanding of the band structure of graphene containing various types of point defects, including nitrogen impurity, hydrogen adsorbate, vacancy defects and the Stone-Wales defect.

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