Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Importance of Electronic Correlation in the Intermetallic Half-Heusler
  Compounds   Low temperature scanning tunneling spectroscopy of HfNiSn shows a V^m(m < 1)
zero bias anomaly around the Fermi level. This local density of states with a
fractional power law shape is well known to be a consequence of electronic
correlations. For comparison, we have also measured the tunneling conductances
of other half-Heusler compounds with 18 valence electrons. ZrNiPb shows a
metal-like local density of states, whereas ZrCoSb and NbFeSb show a linear and
V^2 anomaly. One interpretation of these anomalies is that a correlation gap is
opening in these compounds. By analyzing the magnetoresistance of HfNiSn, we
demonstrate that at low temperatures, electron-electron scattering dominates.
The T^m(m < 1) temperature dependence of the conductivity confirms that the
electronic correlations are a bulk rather than a surface property.

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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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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: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: gr-qc