Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct evidence of magnetic correlations deep inside the superconducting
  state of CaFe1.94Co0.06As2   Imaging local magnetic field distribution in a single crystal of
superconductor CaFe1.94Co0.06As2 shows the presence of anomalous remnant
magnetization within Meissner like regions of the sample. Close to the
superconducting transition temperature we find a coexistence of
superconductivity and magnetic correlations. While the magnetic correlations
are enhanced with the lowering of temperature, interestingly the area over
which the magnetic phase exists shrinks at the expense of a growing
superconducting phase in the sample. The coexistence of two phases deep inside
the superconducting phase in this compound is maintained within the temperature
range that we have explored in our experiment.

8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con