Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weak localization in the 2D metallic regime of Si-MOS   The negative magnetoresistance due to weak localization is investigated in
the two-dimensional metallic state of Si-MOS structures for high conductance
values between 35 and 120 e^2/h. The extracted phase coherence time is equal to
the momentum relaxation time at 10 K but nearly 100 times longer at the lowest
temperature. Nevertheless, only weak logarithmic corrections to the
conductivity are present in the investigated temperature and concentration
range thus proving the absence of strong quantum effects due to
electron-electron interaction. From saturation effects of the phase coherence
time a lower boundary for spin-orbit scattering of about 200 ps is estimated.

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The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con