Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hidden antiferromagnetism on the light-irradiated surface of bulk SrTiO3
  and at the LaAlO3_SrTiO3 interfaces   We study properties of electrons on illuminated surfaces of SrTiO3 with
titanium dxz_dyz and dxy bands for their spectrum. Recently A. F.
Santander-Syro et al [Nature Materials, 13, 1085 (2014)] found that the dxy
bands actually comprise two chiral branches with the Kramers degeneracy at the
zone center lifted in absence of a magnetic moment. From symmetry analysis of
instabilities possible in the Fermi liquid with exchange interactions we
identified the metallic in-layer state with the concrete antiferromagnetic
phase and discuss if the same state materializes at conducting LaAlO3_SrTiO3
interfaces.

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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
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The categories of this paper are: q-alg
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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: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ph
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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: quant-ph