Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Method for determining the residual electron- and hole- densities about
  the neutrality point over the gate-controlled n $\leftrightarrow$ p
  transition in graphene   The Hall effect, and the diagonal resistance, which indicates a residual
resistivity $\rho_{xx} \approx h/4e^{2}$, are experimentally examined over the
p$\leftrightarrow$n transition about the nominal neutrality point in chemical
vapor deposition (CVD) grown graphene. A distribution of neutrality potentials
is invoked in conjunction with multi-carrier conduction to model the
experimental observations. From the modeling, we extract the effective residual
electron- and hole- densities around the nominal neutrality point. The results
indicate mixed transport due to co-existing electrons and holes in large area
zero-band gap CVD graphene devices, which indicates domain confined ambipolar
currents broadly over the gate-induced n $\leftrightarrow$ p transition.

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The categories of this paper are: eess
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The categories of this paper are: econ
7
The categories of this paper are: hep-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph