Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photoemission and X-ray Absorption Studies of the Diluted Magnetic
  Semiconductor Ba$_{1-y}$K$_{y}$(Zn$_{1-x}$Mn$_{x}$)$_{2}$As$_{2}$
  Isostructural to Fe-based Superconductors   The electronic and magnetic properties of a new diluted magnetic
semiconductor (DMS) Ba$_{1-x}$K$_{x}$(Zn$_{1-y}$Mn$_{y}$)$_{2}$As$_{2}$, which
is isostructural to so-called 122-type Fe-based superconductors, are
investigated by x-ray absorption spectroscopy (XAS) and resonance photoemission
spectroscopy (RPES). Mn $L_{2,3}$-edge XAS indicates that the doped Mn atoms
have the valence 2+ and strongly hybridize with the $4p$ orbitals of the
tetrahedrally coordinating As ligands. The Mn $3d$ partial density of states
(PDOS) obtained by RPES shows a peak around 4 eV and relatively high between
0-2 eV below the Fermi level ($E_{F}$) with little contribution at $E_{F}$,
similar to that of the archetypal DMS Ga$_{1-x}$Mn$_{x}$As. This energy level
creates $d^{5}$ electron configuration with $S=5/2$ local magnetic moments at
the Mn atoms. Hole carriers induced by K substitution for Ba atoms go into the
top of the As $4p$ valence band and are weakly bound to the Mn local spins. The
ferromagnetic correlation between the local spins mediated by the hole carriers
induces ferromagnetism in Ba$_{1-x}$K$_{x}$(Zn$_{1-y}$Mn$_{y}$)$_{2}$As$_{2}$

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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: dg-ga