Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gap opening with ordering in PrFe4P12 studied by local tunneling
  spectroscopy   We present measurements of the local tunneling density of states in the low
temperature ordered state of PrFe4P12. The temperature dependencies of the
Fermi level density of states and of the integrated density of states at low
bias voltages show anomalies at T=6.5 K, the onset of multipolar ordering as
detected by specific heat and other macroscopic measurements. In the ordered
phase, we find a local density of states with a V-shape form, indicating a
partial gap opening over the Fermi surface. The size of the gap according to
the tunneling spectra is about 2 meV.

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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: physics
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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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: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: bayes-an