• 文献标题:   Minimal conductivity of rippled graphene with topological disorder
  • 文献类型:   Article
  • 作  者:   CORTIJO A, VOZMEDIANO MAH
  • 作者关键词:   fermi level, graphene, sheet material
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   1098-0121
  • 通讯作者地址:   CSIC
  • 被引频次:   21
  • DOI:   10.1103/PhysRevB.79.184205
  • 出版年:   2009

▎ 摘  要

We study the transport properties of a neutral graphene sheet with curved regions induced or stabilized by topological defects. The proposed model gives rise to Dirac fermions in a random magnetic field and in a random scalar potential acting like a space-dependent Fermi velocity induced by the curvature. The last term leads to a singular long-range correlated disorder with special characteristics. The Drude minimal conductivity at zero energy is found to be inversely proportional to the density of topological disorder, a signature of diffusive behavior.