Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fabrication and Characterization of PbIn-Au-PbIn Superconducting
  Junctions   We report on the fabrication and measurement results of the electrical
transport properties of superconductor-normal metal-superconductor (SNS) weak
links, made of PbIn superconductor and Au metal. The maximum supercurrent
reaches up to ~ 6 \mu A at T = 2.3 K and the supercurrent persists even at
higher temperature of T = 4.7 K. Magnetic field dependence of the critical
current is consistent with a theoretical fit using the narrow junction model.
The superconducting quantum interference device (SQUID) was also fabricated
using two PbIn-Au-PbIn junctions connected in parallel. Under perpendicular
magnetic field, we clearly observed periodic oscillations of dV/dI with a
period of magnetic flux quantum threading into the supercurrent loop of the
SQUID. Our fabrication methods would provide an easy and simple way to explore
the superconducting proximity effects without ultra-low-temperature cryostats.

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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph