Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time Flow in Graphene and Its Implications on the Cutoff Frequency of
  Ballistic Graphene Devices   This manuscript deals with time flow in ballistic graphene devices. It is
commonly believed that in the ballistic regime the traversal time of carriers
in gated graphene at normal incidence is just the ratio of the length of the
device and the Fermi velocity. However, we show that the traversal time is much
slower if the influence of metallic contacts on graphene is considered. Even
the transmission at normal incidence becomes smaller than 1, contradicting yet
another common belief. These unexpected effects are due to the transformation
of Schrodinger electrons in the metallic contact into Dirac electrons in
graphene and vice versa. As a direct consequence of these transformations, the
ultimate performance of gated ballistic devices are much lower than expected,
in agreement with experimental results.

21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an