Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Frustration phenomena in Josephson junction arrays on a dice lattice   AC magnetoimpedance measurements performed on proximity-effect coupled
Josephson junction arrays on a dice lattice reveal unconventional behaviour
resulting from the interplay between the frustration f created by the applied
magnetic field and the particular geometry of the system. While the inverse
magnetoinductance exhibits prominent peaks at f=1/3 and at f=1/6 (and weaker
structures at f=1/9,2/9,1/12,...) reflecting vortex states with a high degree
of superconducting phase coherence, the deep minimum at f=1/2 points to a state
in which the phase coherence is strongly suppressed. These observations are
discussed at the light of recent theoretical work in which the concept of
accidental degeneracy plays a central role.

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The categories of this paper are: astro-ph
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The categories of this paper are: atom-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: patt-sol
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: math
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
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The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
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The categories of this paper are: acc-phys