• 文献标题:   Electron transport modeling for junctions of zigzag and armchair graphene nanoribbons (GNRs)
  • 文献类型:   Article
  • 作  者:   NAEEMI A, MEINDL JD
  • 作者关键词:   conductivity, interconnection, modeling, molecular electronic, quantum wire
  • 出版物名称:   IEEE ELECTRON DEVICE LETTERS
  • ISSN:   0741-3106
  • 通讯作者地址:   Georgia Inst Technol
  • 被引频次:   9
  • DOI:   10.1109/LED.2008.920278
  • 出版年:   2008

▎ 摘  要

Conductance of a seamless-string of zigzag/armchair/ zigzag graphene nanoribbons (GNRs) is modeled using nonequilibrium Green's function methodology as a function of width, Fermi level and the metallic or semiconducting nature of the armchair GNR. Such a structure with a semiconductor armchair GNR combined with a top gate can potentially form a transistor whereas a structure with a metallic armchair GNR can be used for interconnecting nearby transistors. It is shown that the 30 degrees bends in such structures can be quite transparent for electrons (80% to 90% of ideal conductance) so long as there is the same number of conduction channels in the zigzag and armchair GNRs.