Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-consistent current-voltage characteristics of superconducting
  nano-structures   By solving the Bogoliubov - de Gennes equation self-consistently in the
presence of a non-equilibrium quasi-particle distribution, we compute the
current-voltage characteristic of a phase coherent superconducting island with
a tunnel barrier at one end. The results show significant structure, arising
from the competition between scattering processes at the boundaries of the
island and modification of the order parameter by quasi-particles and
superflow. This structure is not present in non self-consistent descriptions of
normal-superconducting nano-structures.

3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci