Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Averaged effective pinning potential in YBCO single crystals close to Tc   In this paper we present our results on the low density magnetic flux pinning
characteristics, obtained though HTSC samples magnetization relaxation
measurements M(t) near the phase transition temperatures (0,8 < T/Tc > 0,99).As
the main object of investigation we have chosen pure YBa2Cu3O7-x (YBCO) single
crystal samples with optimal oxygen saturation. We note the presence of strong
pinning in the system of unidirectional planar defects and a significant
nonmonotonicity of the Up(T) dependence behavior for low density trapped
magnetic flux.

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The categories of this paper are: mtrl-th
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The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: math
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat