Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Wideband microwave measurements in Nb/Pd$_{84}$Ni$_{16}$/Nb structures
  and comparison with thin Nb films   We present wideband microwave measurements (1-22 GHz) taken on
Superconductor/Ferromagnet heterostructures with the Corbino disk technique. We
apply the technique to Nb/PdNi/Nb trilayers in the vortex state and we compare
the results to data taken with the same technique on a Nb thin film. We show
that it is possible to directly extract the genuine flux-flow resistivity from
our frequency-dependent measurements without overcoming the (depinning)
critical current. The characteristic frequency for vortex relaxation can also
be estimated, without resorting to a specific model. We find that the F layer
determines a weakening of pinning and an enhancement of the flux-flow
resistivity with respect to the Nb film.

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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex