Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting and Topological Properties in Centrosymmetric PbTaS2
  Single Crystals   We report the superconductivity of PbTaS2 single crystals with the
centrosymmetric structure. The systematic measurements of magnetization,
electric transport and specific heat indicate that PbTaS2 is a weakly coupled
type-II superconductor with transition temperature Tc = 2.6 K. Furthermore, the
band structure calculations predicted four nodal lines near the Fermi energy
with drumhead-like surface states, suggesting centrosymmetric PbTaS2 is a
candidate of topological nodal line semimetals. These results demonstrate that
PbTaS2 may open up another avenue for further exploring the properties of
superconductivity and topological nodal-line states.

8
The categories of this paper are: hep-ex
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The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
1
The categories of this paper are: cs
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: nlin
18
The categories of this paper are: econ