• 文献标题:   Impact of calcium on transport property of graphene
  • 文献类型:   Article
  • 作  者:   KATOCH J, ISHIGAMI M
  • 作者关键词:   graphene, transport propertie, adsorbatedependent transport measurement
  • 出版物名称:   SOLID STATE COMMUNICATIONS
  • ISSN:   0038-1098
  • 通讯作者地址:   Univ Cent Florida
  • 被引频次:   7
  • DOI:   10.1016/j.ssc.2011.11.003
  • 出版年:   2012

▎ 摘  要

We have measured the impact of calcium adsorbates on the transport property of graphene. Although calcium renders conductivity linearly dependent on the carrier density of graphene as predicted, our experimental results diverge from the existing theoretical calculations. Our data expose the inadequacy of any existing theory to describe the minimum conductivity of graphene and indicate that a more complete testing of the impurity scattering calculations will require improving the experimental capabilities by minimizing the contribution from the substrate-bound charged impurities and developing an ability to count the number of adsorbates while measuring transport. (C) 2011 Elsevier Ltd. All rights reserved.