Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Element-resolved orbital polarization in (III,Mn)As ferromagnetic
  semiconductors from $K$ edge x-ray magnetic circular dichroism   Using x-ray magnetic circular dichroism (XMCD), we determine the
element-specific character and polarization of unoccupied states near the Fermi
level in (Ga,Mn)As and (In,Ga,Mn)As thin films. The XMCD at the As K absorption
edge consists of a single peak located on the low-energy side of the edge,
which increases with the concentration of ferromagnetic Mn moments. The XMCD at
the Mn K edge is more detailed and is strongly concentration-dependent, which
is interpreted as a signature of hole localization for low Mn doping. The
results indicate a markedly different character of the polarized holes in
low-doped insulating and high-doped metallic films, with a transfer of the hole
orbital magnetic moment from Mn to As sites on crossing the metal-insulator
transition.

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The categories of this paper are: physics
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The categories of this paper are: q-bio
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: cs