Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unconventional magnetism in small gold organic molecules   We present a theoretical study of the magnetic properties of
dicyclopentadienyl metallocene and phthalocyanine molecules, that contain the
transition metal atoms M = Fe, Co, Ni, Cu, Zn, Ir, Pt and Au. Our most
important prediction is that gold and copper molecules are magnetic. We find
that the magnetism of these molecules is fairly unconventional: the gold atom
itself is weakly magnetic or even non-magnetic. Its role is rather to induce
magnetism in the surrounding carbon and nitrogen atoms, producing a sort of
spin density wave.

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The categories of this paper are: q-alg
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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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: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: nlin