Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Maximum Metallic Conductivity in Si-MOS Structures   We found that the conductivity of the two-dimensional electron system in
Si-MOS structures is limited to a maximum value, G_{max}, as either density
increases or temperature decreases. This value G_{max} is weakly disorder
dependent and ranging from 100 to 140 e^2/h for samples whose mobilities differ
by a factor of 4.

9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
16
The categories of this paper are: stat
19
The categories of this paper are: eess
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom