Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reversibility of Superconducting Nb Weak Links Driven by the Proximity
  Effect in a Quantum Interference Device   We demonstrate the role of proximity effect in the thermal hysteresis of
superconducting constrictions. From the analysis of successive thermal
instabilities in the transport characteristics of micron-size superconducting
quantum interference devices with a well-controlled geometry, we obtain a
complete picture of the different thermal regimes. These determine whether the
junctions are hysteretic or not. Below the superconductor critical temperature,
the critical current switches from a classical weak-link behavior to one driven
by the proximity effect. The associated small amplitude of the critical current
makes it robust with respect to the heat generation by phase-slips, leading to
a non-hysteretic behavior.

5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci