Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extreme vortex pinning in the non-centrosymmetric superconductor
  CePt$_{3}$Si   We report on the vortex dynamics of a single crystal of the
non-centrosymmetric heavy-fermion superconductor CePt$_{3}$Si. Decays of the
remnant magnetization display a clean logarithmic time dependence with rates
that follow the temperature dependence expected from the Kim-Anderson theory.
The creep rates are lower than observed in any other centrosymmetric
superconductor and are not caused by high critical currents. On the contrary,
the critical current in CePt$_{3}$Si is considerably lower than in other
superconductors with strong vortex pinning indicating that an alternative
impediment on the flux line motion might be at work in this superconductor.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-th
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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: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
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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: eess
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The categories of this paper are: cs
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The categories of this paper are: chem-ph