Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dyakonov-Perel spin relaxation near metal-insulator transition and in
  hopping transport   In a heavily doped semiconductor with weak spin-orbital interaction the
Dyakonov-Perel spin relaxation rate is known to be proportional to the Drude
conductivity. We argue that in the case of weak spin-orbital interaction this
proportionality goes beyond the Drude mechanism: it stays valid through the
metal-insulator transition and in the range of the exponentially small hopping
conductivity.

36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th