Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic Correlated Electronic Structure of CrO2 Revealed by Hard X-ray
  Photoemission Spectroscopy   Bulk-sensitive hard x-ray photoemission spectroscopy (HAXPES) reveals for
as-grown epitaxial films of half-metallic ferromagnetic CrO2(100) a pronounced
screening feature in the Cr 2p3/2 core level and an asymmetry in the O 1s core
level. This gives evidence of a finite, metal-type Fermi edge, which is
surprisingly not observed in HAXPES. A spectral weight shift in HAXPES away
from the Fermi energy is attributed to single-ion recoil effects due to high
energy photoelectrons. In conjunction with inverse PES the intrinsic correlated
Mott-Hubbard-type electronic structure is unravelled, yielding an averaged
Coulomb correlation energy Uav ~ 3.2 eV.

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The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: astro-ph