Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Correlation between incoherent phase fluctuations and disorder in
  Y$_{1-x}$Pr$_x$Ba$_2$Cu$_3$O$_{7-\delta}$ epitaxial films from Nernst effect
  measurements   Measurements of Nernst effect, resistivity and Hall angle on epitaxial films
of Y$_{1-x}$Pr$_x$Ba$_2$Cu$_3$O$_{7-\delta}$(Pr-YBCO, 0$\leq x\leq$0.4) are
reported over a broad range of temperature and magnetic field. While the Hall
and resistivity data suggest a broad pseudogap regime in accordance with
earlier results, these first measurements of the Nernst effect on Pr-YBCO show
a large signal above the superconducting transition temperature(T$_c$). This
effect is attributed to vortex-like excitations in the phase incoherent
condensate existing above T$_c$. A correlation between disorder and the width
of the phase fluctuation regime has been established for the YBCO family of
cuprates, which suggests a T$_c\approx$110K for disorder-free
YBa$_2$Cu$_3$O$_{7-\delta}$.

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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: math-ph
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The categories of this paper are: adap-org