Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Andreev scattering and conductance enhancement in mesoscopic
  semiconductor-superconductor junctions   An inherent difficulty in studying mesoscopic effects in
semiconductor--superconductor hybrid structures is the large Schottky barrier
which often forms at the interface. A large technological effort has been
invested in in improving the contact between the superconductor and the
two-dimensional electron gas (2DEG) of a semiconductor heterostructure, and in
recent years this has become possible for e.g. GaAs-Al, GaAs-In, and InAs-Nb
junctions. This development motivates quantitative theoretical modeling of
sample-specific transport properties. The aim of our work is to model the
conducting properties of a ballistic 2DEG-S interfaces with a QPC in the normal
region and also to take into account scattering due to a weak Schottky barrier
and/or non-matching Fermi properties of the semiconductor and superconductor.

21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an