Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Longitudinal spin-fluctuations and superconductivity in ferromagnetic
  ZrZn$_{2}$ from ab initio calculations   The recent discovery of superconductivity coexisting with weak itinerant
ferromagnetism in the $d$-electron intermetallic compound ZrZn$_{2}$ strongly
suggests spin-fluctuation mediated superconductivity. {\it Ab initio}
electronic structure calculations of the Fermi surface and generalized
susceptibilities are performed to investigate the viability of longitudinal
spin-fluctuation-induced spin-triplet superconductivity in the ferromagnetic
state. The critical temperature is estimated to be of the order of 1 K.
Additionally, it is shown that in spite of a strong electron-phonon coupling
($\lambda_{ph}=0.7$), conventional s-wave superconductivity is inhibited by the
presence of strong spin-fluctuations.

9
The categories of this paper are: nlin
19
The categories of this paper are: eess
18
The categories of this paper are: econ
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con