Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effect of pressure on the physical properties of the superconductor
  NiBi3   We present an experimental study of the superconducting properties of NiBi3
as a function of pressure by means of resistivity and magnetization
measurements and combine our results with DFT calculations of the band
structure under pressure. We find a moderate suppression of the critical
temperature Tc from ~ 4.1K to ~ 3K by pressures up to 2GPa. By taking into
account the change of the band structure as a function of pressure, we argue
that the decrease in Tc is consistent with conventional,
electron-phonon-mediated BCS-type superconductivity.

30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
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The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
16
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: solv-int
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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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: chem-ph
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg