Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coexistence of magneto-resistance and -capacitance tunability in
  Sm2Ga2Fe2O9   We propose that charge gradient resulting in the coexisting
magneto-resistance and-capacitance tunability in material systems. We have
experimentally observed coexisting of tunable magneto-resistance and
-capacitance in Sm2Ga2Fe2O9. Our model fits well with the experimental result.

3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg