Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Localization and Dephasing Driven by Magnetic Fluctuations in Low
  Carrier Density Colossal Magnetoresistance Materials   Localization and dephasing of conduction electrons in a low carrier density
ferromagnet due to scattering on magnetic fluctuations is considered. We claim
the existence of the "mobility edge", which separates the states with fast
diffusion and the states with slow diffusion; the latter is determined by the
dephasing time. When the "mobility edge" crosses the Fermi energy a large and
sharp change of conductivity is observed. The theory provides an explanation
for the observed temperature dependence of conductivity in ferromagnetic
semiconductors and manganite pyrochlores.

33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math