Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fulde-Ferrell-Larkin-Ovchinnikov State and Field-Induced
  Superconductivity in an Organic Superconductor   An experimental phase diagram of the field-induced superconductivity in the
lambda-(BETS)_2FeCl_4 compound is theoretically reproduced by a combination of
the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state and the Jaccarino-Peter
mechanism. Semi-quantitative agreement is obtained in the presence of a very
weak subdominant triplet pairing interaction between electrons with
antiparallel spins, in addition to a dominant singlet pairing interaction. An
order-parameter mixing effect enhances the FFLO state, and plays an essential
role in the semi-quantitative agreement. As a possible origin of the small
triplet component, pairing interactions mediated by spin fluctuations are
proposed. It is discussed that in this mechanism of the pairing interactions
equal spin pairing interactions are much weaker than the antiparallel spin
pairing interactions in the strong magnetic field, which is consistent with the
absence of observation of the equal spin state.

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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
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The categories of this paper are: stat