Impact of calcium on transport property of graphene

    Authors

    J. Katoch;M. Ishigami

    Comments

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    Abbreviated Journal Title

    Solid State Commun.

    Keywords

    Graphene; Transport properties; Adsorbate-dependent transport; measurement; SIO2; Physics, Condensed Matter

    Abstract

    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.

    Journal Title

    Solid State Communications

    Volume

    152

    Issue/Number

    2

    Publication Date

    1-1-2012

    Document Type

    Article

    Language

    English

    First Page

    60

    Last Page

    63

    WOS Identifier

    WOS:000300077500003

    ISSN

    0038-1098

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