Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Glass-like thermal conductivity in SrTiO3 thermoelectrics induced by
  A-site vacancies   The introduction of A-site vacancies in SrTiO3 results in a glass-like
thermal conductivity while Nb substituted samples maintains good electrical
conductivity. This unexpected result brings SrTiO3 one step closer to being a
high-performing phonon-glass electron-crystal thermoelectric material.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ