Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlation effects in p-electron magnets: the case of RbO_2   We present results of GGA+U calculations for the "d^0 magnet" RbO_2, where
magnetic properties are due to partially filled oxygen p orbitals. We show that
on-site interactions on the oxygen sites lead to a strong tendency towards the
formation of an orbitally polarized insulating state, in contrast to the
half-metallic behavior predicted for this class of compounds within pure
LDA/GGA. The obtained energy differences between different orbitally ordered
configurations are sizeable, indicating an orbital ordering temperature higher
than the antiferromagnetic Neel temperature of ~15 K. Our results demonstrate
the importance of correlation effects in p electron magnets such as RbO_2.

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The categories of this paper are: plasm-ph
2
The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org