The thermal Hall effect (THE) is an important experimental probe of band topology and elementary excitations. Here, a large thermal Hall angle (THA) κ
xy/κ
xx ≈ 7 × 10
−3 discovered so far in ferrimagnetic spinel FeCr
2S
4 and a large thermal Hall conductivity (κ
xy) discovered first in spinel structure and reaching a magnitude of
...