Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pressure induced quenching of planar rattling in
  Cu$_{10}$Zn$_{2}$Sb$_{4}$S$_{13}$ studied by specific-heat and x-ray
  diffraction measurements   We have studied the pressure effect on the rattling of tetrahedrite
Cu$_{10}$Zn$_{2}$Sb$_{4}$S$_{13\,}$(CZSS) and type-I clathrate
Ba$_{8}$Ga$_{16}$Sn$_{30\,}$(BGS) by specific heat and x-ray diffraction
measurements. By applying pressure $P$, the rattling energy for CZSS initially
decreases and steeply increases for $P$ $\textgreater$ $1$ GPa. By contrast,
the energy for BGS increases monotonically with $P$ up to 6.5 GPa. An analysis
of the pressure dependent specific heat and x-ray diffraction indicates that
the out-of-plane rattling of the Cu atoms in the S$_{3}$ triangle of CZSS
originates from the chemical pressure, unlike the rattling of the Ba ions among
off-center sites in an oversized cage of BGS. The rattling in CZSS ceases upon
further increasing $P$ above 2 GPa, suggesting that Cu atoms escape away from
the S$_{3}$ triangle plane.

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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: solv-int
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
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The categories of this paper are: econ