Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetometry with low resistance proximity Josephson junction   We characterize a niobium-based superconducting quantum interference
proximity transistor (Nb-SQUIPT) built upon a Nb-Cu-Nb SNS weak link. The
Nb-SQUIPT and SNS devices are fabricated simultaneously in two separate
lithography and deposition steps, relying on Ar ion cleaning of the Nb contact
surfaces. The quality of the Nb-Cu interface is characterized by measuring the
temperature-dependent equilibrium critical supercurrent of the SNS junction. In
the Nb-SQUIPT device, we observe a maximum flux-to-current transfer function
value of about 55 nA/\Phi_0 in the sub-gap regime of bias voltages. This
results in suppression of power dissipation down to a few fW. The device can
implement a low-dissipation SQUIPT, improving by up to two orders of magnitude
compared to a conventional device based on an Al-Cu-Al SNS junction and an Al
tunnel probe (Al-SQUIPT).

15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin