Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Andreev Reflection Enhanced Shot Noise in Mesoscopic SNS Junctions   Current noise is measured with a SQUID in low impedance and transparent
Nb-Al-Nb j unctions of length comparable to the phase breaking length and much
longer than the thermal length. The shot noise amplitude is compared with
theoretical predictions of doubled shot noise in diffusive
normal/superconductor (NS) junctions due to the Andreev reflections. We discuss
the heat dissipation away from the normal part through the NS interfaces. A
weak applied magnetic field reduces the amplitude of the 1/f noise by a factor
of two, showing that even far from equilibrium the sample is in the mesoscopic
regime.

18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom