Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of the signatures of sub-resolution defects in
  two-dimensional superconductors with scanning SQUID   The diamagnetic susceptibility of a superconductor is directly related to its
superfluid density. Mutual inductance is a highly sensitive method for
characterizing thin films; however, in traditional mutual inductance
measurements, the measured response is a non-trivial average over the area of
the mutual inductance coils, which are typically of millimeter size. Here we
image localized, isolated features in the diamagnetic susceptibility of
{\delta}-doped SrTiO3, the 2-DES at the interface between LaAlO3 and SrTiO3,
and Nb superconducting thin film systems using scanning superconducting quantum
interference device susceptometry, with spatial resolution as fine as 0.7
{\mu}m. We show that these features can be modeled as locally suppressed
superfluid density, with a single parameter that characterizes the strength of
each feature. This method provides a systematic means of finding and
quantifying submicron defects in two-dimensional superconductors.

10
The categories of this paper are: q-bio
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn