Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical study on electronic structure of the locally non-centrosymmetric
  CeRh$_2$As$_2$   The electronic structures of the heavy-fermion superconductor CeRh$_2$As$_2$
with the local inversion symmetry breaking and the reference material
LaRh$_2$As$_2$ have been investigated by using experimental optical
conductivity ($\sigma_1(\omega)$) spectra and first-principal DFT calculations.
In the low-temperature $\sigma_1(\omega)$ spectra of CeRh$_2$As$_2$, a
$4f$-conduction electron hybridization and heavy quasiparticles are clearly
indicated by a mid-infrared peak and a narrow Drude peak. In LaRh$_2$As$_2$,
these features are absent in the $\sigma_1(\omega)$ spectrum, however, it can
nicely be reproduced by DFT calculations. For both compounds, the combination
between a local inversion symmetry breaking and a large spin-orbit (SO)
interaction plays an important role for the electronic structure, however, the
SO splitting bands could not be resolved in the $\sigma_1(\omega)$ spectra due
to the small SO splitting size.

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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: q-bio
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The categories of this paper are: funct-an
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: econ