Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flux trapping in superconducting hydrides under high pressure   High-temperature conventional superconductivity in hydrogen-rich materials
under high pressure has been reportedly found in twelve different compounds in
recent years. However, the experimental evidence on which these claims are
based has recently been called into question. Here we discuss the measurement
of trapped magnetic flux, that should establish definitively that these
materials are indeed high-temperature superconductors. Its absence should
confirm claims to the contrary.

0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
1
The categories of this paper are: cs
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex