Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detuning the Honeycomb of $\alpha$-RuCl$_{3}$: Pressure-Dependent
  Optical Studies Reveal Broken Symmetry   The honeycomb Mott insulator $\alpha$-RuCl$_3$ loses its low-temperature
magnetic order by pressure. We report clear evidence for a dimerized structure
at $P>1$ GPa and observe the breakdown of the relativistic $j_{\rm eff}$
picture in this regime strongly affecting the electronic properties. A
pressure-induced Kitaev quantum spin liquid cannot occur in this broken
symmetry state. We shed light on the new phase by broad-band infrared
spectroscopy of the low-temperature properties of $\alpha$-RuCl$_{3}$ and ab
initio density functional theory calculations, both under hydrostatic pressure.

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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: plasm-ph