• 文献标题:   Conductivity of graphene with resonant adsorbates: beyond the nearest neighbor hopping model
  • 文献类型:   Article
  • 作  者:   DE LAISSARDIERE GT, MAYOU D
  • 作者关键词:   graphene, adsorbate, conductivity, anderson localization, quantum transport calculation
  • 出版物名称:   ADVANCES IN NATURAL SCIENCESNANOSCIENCE NANOTECHNOLOGY
  • ISSN:   2043-6254 EI 2043-6262
  • 通讯作者地址:   Univ Cergy Pontoise
  • 被引频次:   4
  • DOI:   10.1088/2043-6262/5/1/015007
  • 出版年:   2014

▎ 摘  要

Adsorbates on graphene can create resonances that lead to efficient electron scattering and strongly affect the electronic conductivity. Therefore, a proper description of these resonances is important to gain a good insight into their effect on conductivity. The characteristics of the resonance and in particular its T-matrix depend on the adsorbate itself but also on the electronic structure of graphene. Here we show that a proper tight-binding model of graphene which includes hopping beyond the nearest-neighbor leads to sizable modifications of the scattering properties with respect to the mostly used nearest neighbor hopping model. We compare results obtained with hopping beyond the nearest-neighbor to those of our recent work (2013 Phys. Rev. Lett. 113 146601). We conclude that the universal properties discussed in our recent work are unchanged but that a detailed comparison with experiments requires a sufficiently precise tight-binding model of the graphene layer.