Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single Crystal Growth and Spin Polarization Measurements of Diluted
  Magnetic Semiconductor (BaK)(ZnMn)2As2   Recently a new type diluted magnetic semiconductor (BaK)(ZnMn)2As2 (BZA) with
high Cure temperature (Tc) was discovered showing independent spin and charge
doping mechanism. This makes BZA a promising material for spintronics devices.
Here we report for the first time the successful growth of BZA single crystal.
An Andreev reflection junction that can be used to evaluate spin polarization
was fabricated based on the BZA single crystal, a 66% spin polarization of the
BZA single crystal was hence obtained by Andreev reflection spectroscopy
analysis.

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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: q-bio