Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Voltage noise and surface current fluctuations in the superconducting
  surface sheath   We report the first measurements of the voltage noise in the surface
superconductivity state of a type-II superconductor. We present strong
evidences that surface vortices generates surface current fluctuations whose
magnitude can be modified by the pinning ability of the surface. Simple
two-stage mechanism governed by current conservation appears to describe the
data. We conclude that large voltage fluctuations induced by surface vortices
exist while the bulk is metallic. Furthermore, this experiment shows that sole
surface current fluctuations can account for the noise observed even in the
presence of vortices in the bulk.

17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ