Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ferromagnetic semiconductor (In,Ga,Mn)As with Curie temperature above
  100 K   We have grown (InyGa1-y)1-xMnxAs ferromagnetic semiconductor layers with Mn
composition x up to 0.13 on InP substrates by molecular beam epitaxy. Near the
lattice-matched composition, i.e., y ~ 0.53, the Curie temperature increases
linearly with the ferromagnetically effective Mn composition x_eff, following
the empirical equation T_C=1300x_eff. We obtained Curie temperatures above 100
K when x is relatively high (x>0.1; x_eff>0.08) and the hole concentration is
in the order of 10^19 cm^-3.

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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: cs
0
The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: nlin
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The categories of this paper are: q-alg