Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Pressure Synthesis and Superconductivity of Ag-doped Topological
  Crystalline Insulator SnTe (Sn1-xAgxTe with x = 0-0.5)   We have synthesized the single-phase polycrystalline samples of Sn1-xAgxTe,
Ag-doped topological crystalline insulator SnTe, with a range of x = 0-0.5
using a high-pressure synthesis method. The crystal structure of Sn1-xAgxTe at
room temperature is a cubic NaCl-type structure, which does not vary upon Ag
substitution. Bulk superconductivity with a transition temperature of 2.4 K was
observed for x = 0.15-0.25, and the optimal Ag content was x = 0.2. The
Sn1-xAgxTe superconducting phase will be useful for understanding the
superconductivity nature and mechanisms of the carrier-doped SnTe system.

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The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom