Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultralow Thermal Conductivity in Full-Heusler Semiconductors   Semiconducting half- and, to a lesser extent, full-Heusler compounds are
promising thermoelectric materials due to their compelling electronic
properties with large power factors. However, intrinsically high thermal
conductivity resulting in a limited thermoelectric efficiency has so far
impeded their widespread use in practical applications. Here, we report the
computational discovery of a class of hitherto unknown stable semiconducting
full-Heusler compounds with ten valence electrons ($X_2YZ$, $X$=Ca, Sr, and Ba;
$Y$= Au and Hg; $Z$=Sn, Pb, As, Sb, and Bi) through high-throughput $ab-initio$
screening. These new compounds exhibit ultralow lattice thermal conductivity
$\kappa_{\text{L}}$ close to the theoretical minimum due to strong anharmonic
rattling of the heavy noble metals, while preserving high power factors, thus
resulting in excellent phonon-glass electron-crystal materials.

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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: chem-ph
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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: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: math-ph