Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic Caging of Interstitial Vortices in Superconductors with a
  Square Array of Rectangular Antidots   We investigate anisotropy in the vortex pinning in thin superconducting films
with a square array of rectangular submicron holes ("antidots"). The size of
the antidots is chosen in such a way that it corresponds to a saturation number
n_s=1, i.e. each antidot can trap at most one flux quantum. Therefore,
interstitial vortices, appearing when the magnetic field exceeds the first
matching field, are "caged" at the interstitial positions by the repulsion from
the saturated antidots. We observe an overall higher critical current Ic(H)
when it is measured parallel to the long side of the antidots than the Ic(H)
along the short side of the antidots. Although the pinning force, exerted by
the empty antidot on the vortex, turns out to be isotropic, our I_c(H) data
indicate that the caging force, experienced by the interstitial vortices and
provided by the array of saturated antidots, is strongly anisotropic.

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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas