Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microscopic theory of Cooper pair beam splitters based on carbon
  nanotubes   We analyze microscopically a Cooper pair splitting device in which a central
superconducting lead is connected to two weakly coupled normal leads through a
carbon nanotube. We determine the splitting efficiency at resonance in terms of
geometrical and material parameters, including the effect of spin-orbit
scattering. While the efficiency in the linear regime is limited to 50% and
decay exponentially as a function of the width of the superconducting region we
show that it can rise up to $\sim 100%$ in the non-linear regime for certain
regions of the stability diagram.

37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th