Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zeeman effect induced 0-$\pi$ transitions in ballistic Dirac semimetal
  Josephson junctions   One of the consequences of Cooper pairs having a finite momentum in the
interlayer of a Josephson junction, is $\pi$-junction behavior. The finite
momentum can either be due to an exchange field in ferromagnetic Josephson
junctions, or due to the Zeeman effect. Here, we report the observation of
Zeeman effect induced 0-$\pi$ transitions in Bi$_{1-x}$Sb$_x$, 3D Dirac
semimetal-based Josephson junctions. The large g-factor of the Zeeman effect
from a magnetic field applied in the plane of the junction allows tuning of the
Josephson junctions from 0- to $\pi$- regimes. This is revealed by sign changes
in the modulation of the critical current by applied magnetic field of an
asymmetric superconducting quantum interference device (SQUID). Additionally,
we directly measure a non-sinusoidal current-phase relation in the asymmetric
SQUID, consistent with models for ballistic Josephson transport.

29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex