Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic spin fluctuations and superconductivity in "115'' heavy
  fermion compounds: 59Co NMR study in PuCoGa5   We report results of $^{59}$Co nuclear magnetic resonance measurements on a
single crystal of superconducting PuCoGa5 in its normal state. The nuclear
spin-lattice relaxation rates and the Knight shifts as a function of
temperature reveal an anisotropy of spin fluctuations with finite wave vector
q. By comparison with the isostructural members, we conclude that
antiferromagnetic XY-type anisotropy of spin fluctuations plays an important
role in mediating superconductivity in these heavy fermion materials.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph