Title

Impact of calcium on transport property of graphene

Authors

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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