Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vortex motion and flux-flow resistivity in dirty multiband
  superconductors   The conductivity of vortex lattices in multiband superconductors with high
concentration of impurities is calculated based on microscopic kinetic theory.
Both the limits of high and low fields are considered, when the magnetic
induction is close to or much smaller than the critical field strength
$H_{c2}$, respectively. It is shown that in contrast to single-band
superconductors the resistive properties are not universal but depend on the
pairing constants and ratios of diffusivities in different bands. The low-field
magneto-resistance can strongly exceed Bardeen-Stephen estimation in a
quantitative agreement with experimental data for two-band superconductor
MgB$_2$.

1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th