Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiple nodeless superconducting gaps in noncentrosymmetric
  superconductor PbTaSe2 with topological bulk nodal lines   Low-temperature thermal conductivity measurements were performed on single
crystal of PbTaSe$_2$, a noncentrosymmetric superconductor with topological
bulk nodal lines in the electronic band structure. It is found that the
residual linear term $\kappa_0/T$ is negligible in zero magnetic field.
Furthermore, the field dependence of $\kappa_0/T$ exhibits a clear "$S$"-shape
curve. These results suggest that PbTaSe$_2$ has multiple nodeless
superconducting gaps. Therefore, the spin-triplet state with gap nodes does not
play an important role in this noncentrosymmetric superconductor with strong
spin-orbital coupling. The fully gapped superconducting state also meets the
requirement of a topological superconductor, if PbTaSe$_2$ is indeed the case.

23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org