Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Competition between the Superconducting Proximity Effect and Coulomb
  Interactions in a Graphene Andreev Interferometer   We have investigated transport through graphene Andreev interferometers
exhibiting reentrance of the superconducting proximity effect. We observed a
crossover in the Andreev conductance oscillations as a function of gate voltage
($V_{BG}$). At high $V_{BG}$ the energy-dependent oscillation amplitude
exhibits a scaling predicted for non-interacting electrons, which breaks down
at low $V_{BG}$. The phenomenon is a manifestation of electron-electron
interactions, whose main effect is to shorten the single-particle phase
coherence time $\tau_\phi$. These results indicate that graphene provides a
useful experimental platform to investigate the competition between
superconducting proximity effect and interactions.

1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph