Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Controllable manipulation of superconductivity using magnetic vortices   The magneto-transport of a superconducting/ferromagnetic hybrid structure
consisting of a superconducting thin film in contact with an array of magnetic
nanodots in the so-called "magnetic vortex-state" exhibits interesting
properties. For certain magnetic states, the stray magnetic field from the
vortex array is intense enough to drive the superconducting film into the
normal state. In this fashion, the normal-to-superconducting phase transition
can be controlled by the magnetic history. The strong coupling between
superconducting and magnetic subsystems allows characteristically ferromagnetic
properties, such as hysteresis and remanence, to be dramatically transferred
into the transport properties of the superconductor.

7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph