Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetoresistance of proximity coupled Au wires   We report measurements of the magnetoresistance (MR) of narrow Au wires
coupled to a superconducting Al contact on one end, and a normal Au contact on
the other. The MR at low magnetic field $B$ is quadratic in $B$, with a
characteristic field scale $B_c$ determined by phase coherent paths which
encompass not only the wire, but also the two contacts. $B_c$ is essentially
temperature independent at low temperatures, indicating that the area of the
phase coherent paths is not determined by the superconducting coherence length
$L_T$ in the normal metal, which is strongly temperature dependent at low
temperatures. We identify the relevant length scale as a combination of the
electron phase coherence length $L_\phi$ in the normal metal and the coherence
length $\xi_S$ in the superconductor.

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The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol