• 文献标题:   Effects of disorder range and electronic energy on the perfect transmission in graphene nanoribbons
  • 文献类型:   Article
  • 作  者:   LIMA LRF, PINHEIRO FA, CAPAZ RB, LEWENKOPF CH, MUCCIOLO ER
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Fed Rio de Janeiro
  • 被引频次:   7
  • DOI:   10.1103/PhysRevB.86.205111
  • 出版年:   2012

▎ 摘  要

Numerical calculations based on the recursive Green's function method in the tight-binding approximation are performed to calculate the dimensionless conductance g in disordered graphene nanoribbons with Gaussian scatterers. The influence of the transition from short-to long-ranged disorder on g is studied as well as its effects on the formation of a perfectly conducting channel. We also investigate the dependence of electronic energy on the perfectly conducting channel. We propose and calculate a backscattering estimate in order to establish the connection between the perfectly conducting channel (with g = 1) and the amount of intervalley scattering.