Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiple superconducting transitions in the Sr3Ru2O7 region of
  Sr3Ru2O7-Sr2RuO4 eutectic crystals   We report superconducting properties of Sr3Ru2O7-Sr2RuO4 eutectic crystals,
consisting of the spin-triplet superconductor Sr2RuO4 with a monolayer stacking
of RuO2 planes and the metamagnetic normal metal Sr3Ru2O7 with a bilayer
stacking. Although Sr3Ru2O7 has not been reported to exhibit superconductivity
so far, our AC susceptibility measurements revealed multiple superconducting
transitions occurring in the Sr3Ru2O7 region of the eutectic crystals. The
diamagnetic shielding essentially reached the full fraction at low AC fields
parallel to the c axis. However, both the shielding fraction and the onset
temperature are easily suppressed by AC fields of larger than 0.1 mT-rms and no
anomaly was observed in the specific heat. Moreover, the critical field curves
of these transitions have a positive curvature near zero fields, which is
different from the upper critical field curve of the bulk Sr2RuO4. These facts
suggest that the superconductivity observed in the Sr3Ru2O7 region is not a
bulk property. To explain these experimental results, we propose the scenario
that stacking RuO2 planes, the building block of superconducting Sr2RuO4, are
contained in the Sr3Ru2O7 region as stacking faults.

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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph