Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Anomalous Magnetic Moments in Superconducting Bi/Ni
  Bilayer   There have been continuous efforts in searching for unconventional
superconductivity over the past five decades. Compared to the well-established
d-wave superconductivity in cuprates, the existence of superconductivity with
other high-angular-momentum pairing symmetries is less conclusive. Bi/Ni
epitaxial bilayer is a potential unconventional superconductor with broken time
reversal symmetry (TRS), for that it demonstrates superconductivity and
ferromagnetism simultaneously at low temperatures. We employ a specially
designed superconducting quantum interference device (SQUID) to detect, on the
Bi/Ni bilayer, the orbital magnetic moment which is expected if the TRS is
broken. An anomalous hysteretic magnetic response has been observed in the
superconducting state, providing the evidence for the existence of chiral
superconducting domains in the material.

25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph