Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic-field-induced supercurrent enhancement in hybrid
  superconductor/magnetic metal structures   The dc transport properties of the (S/M)I(M/S) tunnel structure - proximity
coupled superconductor (S) and magnetic (M) layers separated by an insulator
(I) - in a parallel magnetic field have been investigated. We choose for the M
metal the one in which the effective magnetic interaction, whether it arises
from direct exchange interaction or due to configuration mixing, aligns spins
of the conducting electrons antiparallel to the localized spins of magnetic
ions. For tunnel structures under consideration, we predict that there are the
conditions when the destructive action of the internal and applied magnetic
fields on Cooper pairs is weakened and the increase of the applied magnetic
field causes the field-induced enhancement of the tunnel critical current. The
experimental realization of the novel interesting effect of the interplay
between superconducting and magnetic orders is also discussed.

23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an