Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prediction of pressure-induced stabilization of noble-gas-atom compounds
  with alkali oxides and alkali sulfides   The cubic antifluorite structure comprises a face-centered cubic sublattice
of anions with cations on the tetrahedral sites. The voids in the antifluorite
structure that are crucial for superionicity in Li2O might also act as atomic
traps. Trapping of guest atoms and small molecules within voids of a host
structure leads to the formation of what are known as clathrate compounds. Here
we investigate the possibility of trapping helium or larger neon guest atoms
under pressure within alkali metal oxide and sulfide structures. We find stable
helium and neon-bearing compounds at very low pressures. These structures are
stabilized by a reduction in volume from incorporation of helium or neon atoms
within the antifluorite structure. We predict that NeCs2S could be stable at
ambient pressure. Our study suggests a novel class of alkali oxide and sulfide
materials incorporating noble gas atoms that might potentially be useful for
gas storage.

35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph