Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spiral spin-liquid on a honeycomb lattice   Spiral spin-liquids are correlated paramagnetic states with degenerate
propagation vectors forming a continuous ring or surface in reciprocal space.
On the honeycomb lattice, spiral spin-liquids present a novel route to realize
emergent fracton excitations, quantum spin liquids, and topological spin
textures, yet experimental realizations remain elusive. Here, using neutron
scattering, we show that a spiral spin-liquid is realized in the van der Waals
honeycomb magnet FeCl$_3$. A continuous ring of scattering is directly
observed, which indicates the emergence of an approximate U(1) symmetry in
momentum space. Our work demonstrates that spiral spin-liquids can be achieved
in two-dimensional systems and provides a promising platform to study the
fracton physics in spiral spin-liquids.

26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
6
The categories of this paper are: astro-ph