Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of superconductivity of $3d$ transition-metal based
  antiperovskites via magnetic phase diagram   We theoretically studied the electronic structure, magnetic properties, and
lattice dynamics of a series of $3d$ transition-metal antiperovskite compounds
AXM$_{3}$ by density function theory. Based on the Stoner criterion, we drew
the magnetic phase diagram of carbon-based antiperovskites ACM$_{3}$. In the
phase diagram, compounds with non-magnetic ground state but locating near the
ferromagnetic boundary are suggested to yield sizeable electron-phonon coupling
and behave superconductivity. To approve this deduction, we systematically
calculated the phonon spectra and electron-phonon coupling of a series of
Cr-based antiperovskites ACCr$_{3}$ and ANCr$_{3}$. The results show that
AlCCr$_{3}$, GaCCr$_{3}$, and ZnNCr$_{3}$ could be moderate coupling BCS
superconductors. The influence of spin fluctuation on superconductivity are
discussed. Furthermore, other potential superconducting AXM$_{3}$ including
some new Co-base and Fe-based antiperovskite superconductors are predicted from
the magnetic phase diagram.

1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex