Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Experimental search for the origin of low-energy modes in topological
  materials   Point-contact spectroscopy of several non-superconducting topological
materials reveals a low temperature phase transition that is characterized by a
Bardeen-Cooper-Schrieffer-type of criticality. We find such a behavior of
differential conductance for topological surfaces of non-magnetic and magnetic
Pb$_{1-y-x}$Sn$_y$Mn$_x$Te. We examine a possible contribution from
superconducting nanoparticles, and show to what extent our data are consistent
with Brzezicki's et al. theory [arXiv:1812.02168], assigning the observations
to a collective state adjacent to atomic steps at topological surfaces.

9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph