Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conductance fluctuations in graphene devices with superconducting
  contacts in different charge density regimes   Conductions fluctuations (CF) are studied in single layer graphene devices
with superconducting source and drain contacts made from aluminium. The CF are
found to be enhanced by superconductivity by a factor of 1.4 to 2. This (near)
doubling of the CF indicates that the phase coherence length is l_phi >= L/2.
As compared to previous work, we find a relatively weak dependence of the CF on
the gate voltage, and hence on the carrier density. We also demonstrate that
whether the CF are larger or smaller at the charge neutrality point can be
strongly dependent on the series resistance R_C, which needs to be subtracted.

17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th