Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unconventional Thermal Magnon Hall Effect in a Ferromagnetic Topological
  Insulator   We present theoretically the thermal Hall effect of magnons in a
ferromagnetic lattice with a Kekul\'e-O coupling (KOC) modulation and a
Dzyaloshinskii-Moriya interaction (DMI). Through a strain-based mechanism for
inducing the KOC modulation, we identify four topological phases in terms of
the KOC parameter and DMI strength. We calculate the thermal magnon Hall
conductivity ${\kappa^{xy}}$ at low temperature in each of these phases. We
predict an unconventional conductivity due to a non-zero Berry curvature
emerging from band proximity effects in the topologically trivial phase. We
find sign changes of ${\kappa^{xy}}$ as a function of the model parameters,
associated with the local Berry curvature and occupation probability of the
bulk bands. Throughout, ${\kappa^{xy}}$ can be easily tuned with external
parameters such as the magnetic field and temperature.

22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph