Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Andreev reflection in Au/La_{2-x}Sr_{x}CuO_{4} point-contact junctions:
  separation between pseudogap and phase-coherence gap   We made point-contact measurements with Au tips on La_{2-x}Sr_{x}CuO_{4}
samples with 0.08 < x < 0.20 to investigate the relationship between
superconducting gap and pseudogap. We obtained junctions whose conductance
curves presented typical Andreev reflection features at all temperatures from
4.2 K up to T_c^A close to the bulk T_c. Their fit with the
BTK-Tanaka-Kashiwaya model gives good results if a (s+d)-wave gap symmetry is
used. The doping dependence of the low temperature dominant isotropic gap
component Delta_{s} follows very well the T_{c} vs. x curve. These results
support the separation between the superconducting (Andreev) gap and the
pseudogap measured by angle-resolved photoemission spectroscopy (ARPES) and
tunneling.

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The categories of this paper are: eess
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
2
The categories of this paper are: math
9
The categories of this paper are: nlin
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The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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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: ao-sci
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The categories of this paper are: dg-ga