Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ferromagnetism and superconductivity with possible $p+ip$ pairing
  symmetry in partially hydrogenated graphene   By means of first-principles calculations, we predict two new types of
partially hydrogenated graphene systems: C$_{6}$H$_{1}$ and C$_{6}$H$_{5}$,
which are shown to be ferromagnetic (FM) semimetal and FM narrow-gap
semiconductor, respectively. When properly doped, the Fermi surface of the two
systems consists of an electron pocket or six hole patches in the first
Brillouin zone with completely spin-polarized charge carries. If
superconductivity exists in these systems, the stable pairing symmetries are
shown to be $p+ip$ for electron doped case, and anisotropic $p+ip$ for hole
doped case. The predicted systems may provide fascinating platforms for
studying the novel properties of ferromagnetism and triplet-pairing
superconductivity as well as two-dimensional spintronics.

22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph