• 文献标题:   A Green's function-tight-binding-based approach for T-graphene analysis
  • 文献类型:   Article
  • 作  者:   MOUSAVI H, JALILVAND S, PAIKAR S
  • 作者关键词:   tgraphene nanoribbon, tightbinding model, green s function approach, band structure, density of state
  • 出版物名称:   APPLIED PHYSICS AMATERIALS SCIENCE PROCESSING
  • ISSN:   0947-8396 EI 1432-0630
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1007/s00339-023-06424-4
  • 出版年:   2023

▎ 摘  要

The framework of the tight-binding model and Green's function formalism have been derived to investigate the electronic properties of few-layer T-graphene nanoribbons (TGNRs) with different edges including zigzag, bearded, and armchair TGNR (zTGNR, bTGNR, and aTGNR) and the results are compared with those of monolayers. It was observed that single-layer zTGNRs and bTGNRs with metallic properties retain this characteristic as the number of layers increases. In addition, by virtue of their mirror symmetry, aTGNR monolayers exhibit metallic and semiconducting properties by even and odd widths, respectively. When layers are added, symmetric aTGNRs display metallic behavior, while asymmetric aTGNRs display metallic and semiconducting characteristics, depending on the layer stacking. It is also found that the band structure of symmetric aTGNRs and metallic few-layer asymmetric aTGNRs contain Dirac points which increase with increasing their width and layers.