Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic flux pinning in superconductors with hyperbolic-tesselation
  arrays of pinning sites   We study magnetic flux interacting with arrays of pinning sites (APS) placed
on vertices of hyperbolic tesselations (HT). We show that, due to the gradient
in the density of pinning sites, HT APS are capable of trapping vortices for a
broad range of applied magnetic fluxes. Thus, the penetration of magnetic field
in HT APS is essentially different from the usual scenario predicted by the
Bean model. We demonstrate that, due to the enhanced asymmetry of the surface
barrier for vortex entry and exit, this HT APS could be used as a "capacitor"
to store magnetic flux.

37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex